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Finding the Fourth Proportional to 487,661.77, 672,946.17 and 272,760.32

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Solution

The fourth proportional to 487,661.77, 672,946.17 and 272,760.32 is: 376,394.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,661.77 : 672,946.17 = 272,760.32 : x
  2. Step 2: Convert to fraction form
    487,661.77/672,946.17 = 272,760.32/x
  3. Step 3: Cross multiply
    487,661.77x = 672,946.17 × 272,760.32
  4. Step 4: Simplify right side
    487,661.77x = 183,553,012,671.97
  5. Step 5: Solve for x
    x = 183,553,012,671.97/487,661.77
  6. Step 6: Final answer
    x = 376,394.10

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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.