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Finding the Fourth Proportional to 458,897.20, 688,345.80 and 143,354.44

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Solution

The fourth proportional to 458,897.20, 688,345.80 and 143,354.44 is: 215,031.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,897.20 : 688,345.80 = 143,354.44 : x
  2. Step 2: Convert to fraction form
    458,897.20/688,345.80 = 143,354.44/x
  3. Step 3: Cross multiply
    458,897.20x = 688,345.80 × 143,354.44
  4. Step 4: Simplify right side
    458,897.20x = 98,677,426,685.35
  5. Step 5: Solve for x
    x = 98,677,426,685.35/458,897.20
  6. Step 6: Final answer
    x = 215,031.66

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Similar ratio
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1.5x scale

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.