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Finding the Fourth Proportional to 508,605.20, 763,045.44 and 153,630.80

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Solution

The fourth proportional to 508,605.20, 763,045.44 and 153,630.80 is: 230,487.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,605.20 : 763,045.44 = 153,630.80 : x
  2. Step 2: Convert to fraction form
    508,605.20/763,045.44 = 153,630.80/x
  3. Step 3: Cross multiply
    508,605.20x = 763,045.44 × 153,630.80
  4. Step 4: Simplify right side
    508,605.20x = 117,227,281,383.55
  5. Step 5: Solve for x
    x = 117,227,281,383.55/508,605.20
  6. Step 6: Final answer
    x = 230,487.78

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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.