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Finding the Fourth Proportional to 318,957.32, 478,479.72 and 94,335.42

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Solution

The fourth proportional to 318,957.32, 478,479.72 and 94,335.42 is: 141,516.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,957.32 : 478,479.72 = 94,335.42 : x
  2. Step 2: Convert to fraction form
    318,957.32/478,479.72 = 94,335.42/x
  3. Step 3: Cross multiply
    318,957.32x = 478,479.72 × 94,335.42
  4. Step 4: Simplify right side
    318,957.32x = 45,137,585,347.68
  5. Step 5: Solve for x
    x = 45,137,585,347.68/318,957.32
  6. Step 6: Final answer
    x = 141,516.07

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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.