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Finding the Fourth Proportional to 431,031.48, 646,600.89 and 146,700.18

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Solution

The fourth proportional to 431,031.48, 646,600.89 and 146,700.18 is: 220,068.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,031.48 : 646,600.89 = 146,700.18 : x
  2. Step 2: Convert to fraction form
    431,031.48/646,600.89 = 146,700.18/x
  3. Step 3: Cross multiply
    431,031.48x = 646,600.89 × 146,700.18
  4. Step 4: Simplify right side
    431,031.48x = 94,856,466,951.16
  5. Step 5: Solve for x
    x = 94,856,466,951.16/431,031.48
  6. Step 6: Final answer
    x = 220,068.54

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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.