Home / 280,079,076.37-386,543,017.88-159,406,403.78

Finding the Fourth Proportional to 280,079,076.37, 386,543,017.88 and 159,406,403.78

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Solution

The fourth proportional to 280,079,076.37, 386,543,017.88 and 159,406,403.78 is: 220,000,127.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,079,076.37 : 386,543,017.88 = 159,406,403.78 : x
  2. Step 2: Convert to fraction form
    280,079,076.37/386,543,017.88 = 159,406,403.78/x
  3. Step 3: Cross multiply
    280,079,076.37x = 386,543,017.88 × 159,406,403.78
  4. Step 4: Simplify right side
    280,079,076.37x = 61,617,432,385,722,008
  5. Step 5: Solve for x
    x = 61,617,432,385,722,008/280,079,076.37
  6. Step 6: Final answer
    x = 220,000,127.05

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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.