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Finding the Fourth Proportional to 499,323.68, 749,518.62 and 215,154.48

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Solution

The fourth proportional to 499,323.68, 749,518.62 and 215,154.48 is: 322,961.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,323.68 : 749,518.62 = 215,154.48 : x
  2. Step 2: Convert to fraction form
    499,323.68/749,518.62 = 215,154.48/x
  3. Step 3: Cross multiply
    499,323.68x = 749,518.62 × 215,154.48
  4. Step 4: Simplify right side
    499,323.68x = 161,262,288,936.42
  5. Step 5: Solve for x
    x = 161,262,288,936.42/499,323.68
  6. Step 6: Final answer
    x = 322,961.43

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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.