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Finding the Fourth Proportional to 487,012.80, 730,780.80 and 237,694.80

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Solution

The fourth proportional to 487,012.80, 730,780.80 and 237,694.80 is: 356,669.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,012.80 : 730,780.80 = 237,694.80 : x
  2. Step 2: Convert to fraction form
    487,012.80/730,780.80 = 237,694.80/x
  3. Step 3: Cross multiply
    487,012.80x = 730,780.80 × 237,694.80
  4. Step 4: Simplify right side
    487,012.80x = 173,702,796,099.84
  5. Step 5: Solve for x
    x = 173,702,796,099.84/487,012.80
  6. Step 6: Final answer
    x = 356,669.88

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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.