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Finding the Fourth Proportional to 487,580.22, 672,862.41 and 272,706.54

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Solution

The fourth proportional to 487,580.22, 672,862.41 and 272,706.54 is: 376,335.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,580.22 : 672,862.41 = 272,706.54 : x
  2. Step 2: Convert to fraction form
    487,580.22/672,862.41 = 272,706.54/x
  3. Step 3: Cross multiply
    487,580.22x = 672,862.41 × 272,706.54
  4. Step 4: Simplify right side
    487,580.22x = 183,493,979,727.16
  5. Step 5: Solve for x
    x = 183,493,979,727.16/487,580.22
  6. Step 6: Final answer
    x = 376,335.98

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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.