Home / 280,615,338.70-420,923,008.05-177,303,208.30

Finding the Fourth Proportional to 280,615,338.70, 420,923,008.05 and 177,303,208.30

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Solution

The fourth proportional to 280,615,338.70, 420,923,008.05 and 177,303,208.30 is: 265,954,812.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,615,338.70 : 420,923,008.05 = 177,303,208.30 : x
  2. Step 2: Convert to fraction form
    280,615,338.70/420,923,008.05 = 177,303,208.30/x
  3. Step 3: Cross multiply
    280,615,338.70x = 420,923,008.05 × 177,303,208.30
  4. Step 4: Simplify right side
    280,615,338.70x = 74,630,999,774,551,728
  5. Step 5: Solve for x
    x = 74,630,999,774,551,728/280,615,338.70
  6. Step 6: Final answer
    x = 265,954,812.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.