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Finding the Fourth Proportional to 318,808.37, 478,323.26 and 141,439.92

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Solution

The fourth proportional to 318,808.37, 478,323.26 and 141,439.92 is: 212,209.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,808.37 : 478,323.26 = 141,439.92 : x
  2. Step 2: Convert to fraction form
    318,808.37/478,323.26 = 141,439.92/x
  3. Step 3: Cross multiply
    318,808.37x = 478,323.26 × 141,439.92
  4. Step 4: Simplify right side
    318,808.37x = 67,654,002,921.34
  5. Step 5: Solve for x
    x = 67,654,002,921.34/318,808.37
  6. Step 6: Final answer
    x = 212,209.00

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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.