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Finding the Fourth Proportional to 499,664.12, 749,496.54 and 125,687

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Solution

The fourth proportional to 499,664.12, 749,496.54 and 125,687 is: 188,530.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,664.12 : 749,496.54 = 125,687 : x
  2. Step 2: Convert to fraction form
    499,664.12/749,496.54 = 125,687/x
  3. Step 3: Cross multiply
    499,664.12x = 749,496.54 × 125,687
  4. Step 4: Simplify right side
    499,664.12x = 94,201,971,622.98
  5. Step 5: Solve for x
    x = 94,201,971,622.98/499,664.12
  6. Step 6: Final answer
    x = 188,530.59

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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.