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Finding the Fourth Proportional to 323,347.32, 485,079.30 and 145,937.88

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Solution

The fourth proportional to 323,347.32, 485,079.30 and 145,937.88 is: 218,933.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,347.32 : 485,079.30 = 145,937.88 : x
  2. Step 2: Convert to fraction form
    323,347.32/485,079.30 = 145,937.88/x
  3. Step 3: Cross multiply
    323,347.32x = 485,079.30 × 145,937.88
  4. Step 4: Simplify right side
    323,347.32x = 70,791,444,673.88
  5. Step 5: Solve for x
    x = 70,791,444,673.88/323,347.32
  6. Step 6: Final answer
    x = 218,933.14

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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.