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Finding the Fourth Proportional to 478,136.52, 717,085.26 and 141,110.28

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Solution

The fourth proportional to 478,136.52, 717,085.26 and 141,110.28 is: 211,630.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,136.52 : 717,085.26 = 141,110.28 : x
  2. Step 2: Convert to fraction form
    478,136.52/717,085.26 = 141,110.28/x
  3. Step 3: Cross multiply
    478,136.52x = 717,085.26 × 141,110.28
  4. Step 4: Simplify right side
    478,136.52x = 101,188,101,822.47
  5. Step 5: Solve for x
    x = 101,188,101,822.47/478,136.52
  6. Step 6: Final answer
    x = 211,630.15

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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.