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Finding the Fourth Proportional to 501,516.20, 692,079.85 and 280,750.40

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Solution

The fourth proportional to 501,516.20, 692,079.85 and 280,750.40 is: 387,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,516.20 : 692,079.85 = 280,750.40 : x
  2. Step 2: Convert to fraction form
    501,516.20/692,079.85 = 280,750.40/x
  3. Step 3: Cross multiply
    501,516.20x = 692,079.85 × 280,750.40
  4. Step 4: Simplify right side
    501,516.20x = 194,301,690,557.17
  5. Step 5: Solve for x
    x = 194,301,690,557.17/501,516.20
  6. Step 6: Final answer
    x = 387,428.55

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