Home / 395,306,020,444.80-545,484,189,681.40-221,698,207,880.84

Finding the Fourth Proportional to 395,306,020,444.80, 545,484,189,681.40 and 221,698,207,880.84

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Solution

The fourth proportional to 395,306,020,444.80, 545,484,189,681.40 and 221,698,207,880.84 is: 305,922,148,981.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,306,020,444.80 : 545,484,189,681.40 = 221,698,207,880.84 : x
  2. Step 2: Convert to fraction form
    395,306,020,444.80/545,484,189,681.40 = 221,698,207,880.84/x
  3. Step 3: Cross multiply
    395,306,020,444.80x = 545,484,189,681.40 × 221,698,207,880.84
  4. Step 4: Simplify right side
    395,306,020,444.80x = 120,932,867,279,698,582,831,104
  5. Step 5: Solve for x
    x = 120,932,867,279,698,582,831,104/395,306,020,444.80
  6. Step 6: Final answer
    x = 305,922,148,981.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.