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Finding the Fourth Proportional to 499,640.20, 749,460.30 and 125,663.20

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Solution

The fourth proportional to 499,640.20, 749,460.30 and 125,663.20 is: 188,494.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,640.20 : 749,460.30 = 125,663.20 : x
  2. Step 2: Convert to fraction form
    499,640.20/749,460.30 = 125,663.20/x
  3. Step 3: Cross multiply
    499,640.20x = 749,460.30 × 125,663.20
  4. Step 4: Simplify right side
    499,640.20x = 94,179,579,570.96
  5. Step 5: Solve for x
    x = 94,179,579,570.96/499,640.20
  6. Step 6: Final answer
    x = 188,494.80

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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.