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Finding the Fourth Proportional to 508,819.90, 763,250.60 and 129,750.46

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Solution

The fourth proportional to 508,819.90, 763,250.60 and 129,750.46 is: 194,630.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,819.90 : 763,250.60 = 129,750.46 : x
  2. Step 2: Convert to fraction form
    508,819.90/763,250.60 = 129,750.46/x
  3. Step 3: Cross multiply
    508,819.90x = 763,250.60 × 129,750.46
  4. Step 4: Simplify right side
    508,819.90x = 99,032,116,445.28
  5. Step 5: Solve for x
    x = 99,032,116,445.28/508,819.90
  6. Step 6: Final answer
    x = 194,630.98

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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.