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Finding the Fourth Proportional to 502,160.28, 692,978.80 and 272,715.96

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Solution

The fourth proportional to 502,160.28, 692,978.80 and 272,715.96 is: 376,346.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,160.28 : 692,978.80 = 272,715.96 : x
  2. Step 2: Convert to fraction form
    502,160.28/692,978.80 = 272,715.96/x
  3. Step 3: Cross multiply
    502,160.28x = 692,978.80 × 272,715.96
  4. Step 4: Simplify right side
    502,160.28x = 188,986,378,701.65
  5. Step 5: Solve for x
    x = 188,986,378,701.65/502,160.28
  6. Step 6: Final answer
    x = 376,346.73

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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.