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Finding the Fourth Proportional to 487,951.61, 732,136.75 and 188,642.40

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Solution

The fourth proportional to 487,951.61, 732,136.75 and 188,642.40 is: 283,044.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,951.61 : 732,136.75 = 188,642.40 : x
  2. Step 2: Convert to fraction form
    487,951.61/732,136.75 = 188,642.40/x
  3. Step 3: Cross multiply
    487,951.61x = 732,136.75 × 188,642.40
  4. Step 4: Simplify right side
    487,951.61x = 138,112,033,648.20
  5. Step 5: Solve for x
    x = 138,112,033,648.20/487,951.61
  6. Step 6: Final answer
    x = 283,044.53

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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.