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Finding the Fourth Proportional to 318,713.30, 477,769.42 and 158,637.88

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Solution

The fourth proportional to 318,713.30, 477,769.42 and 158,637.88 is: 237,807.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,713.30 : 477,769.42 = 158,637.88 : x
  2. Step 2: Convert to fraction form
    318,713.30/477,769.42 = 158,637.88/x
  3. Step 3: Cross multiply
    318,713.30x = 477,769.42 × 158,637.88
  4. Step 4: Simplify right side
    318,713.30x = 75,792,327,917.63
  5. Step 5: Solve for x
    x = 75,792,327,917.63/318,713.30
  6. Step 6: Final answer
    x = 237,807.23

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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.