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Finding the Fourth Proportional to 487,565.12, 672,772.64 and 272,694.08

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Solution

The fourth proportional to 487,565.12, 672,772.64 and 272,694.08 is: 376,280.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,565.12 : 672,772.64 = 272,694.08 : x
  2. Step 2: Convert to fraction form
    487,565.12/672,772.64 = 272,694.08/x
  3. Step 3: Cross multiply
    487,565.12x = 672,772.64 × 272,694.08
  4. Step 4: Simplify right side
    487,565.12x = 183,461,116,113.97
  5. Step 5: Solve for x
    x = 183,461,116,113.97/487,565.12
  6. Step 6: Final answer
    x = 376,280.23

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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.