Home / 257,520,308.40-386,304,082.20-84,997,501.20

Finding the Fourth Proportional to 257,520,308.40, 386,304,082.20 and 84,997,501.20

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Solution

The fourth proportional to 257,520,308.40, 386,304,082.20 and 84,997,501.20 is: 127,504,047.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,520,308.40 : 386,304,082.20 = 84,997,501.20 : x
  2. Step 2: Convert to fraction form
    257,520,308.40/386,304,082.20 = 84,997,501.20/x
  3. Step 3: Cross multiply
    257,520,308.40x = 386,304,082.20 × 84,997,501.20
  4. Step 4: Simplify right side
    257,520,308.40x = 32,834,881,690,359,400
  5. Step 5: Solve for x
    x = 32,834,881,690,359,400/257,520,308.40
  6. Step 6: Final answer
    x = 127,504,047.72

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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.