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Finding the Fourth Proportional to 318,713.04, 478,065.24 and 108,497.52

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Solution

The fourth proportional to 318,713.04, 478,065.24 and 108,497.52 is: 162,744.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,713.04 : 478,065.24 = 108,497.52 : x
  2. Step 2: Convert to fraction form
    318,713.04/478,065.24 = 108,497.52/x
  3. Step 3: Cross multiply
    318,713.04x = 478,065.24 × 108,497.52
  4. Step 4: Simplify right side
    318,713.04x = 51,868,892,938.20
  5. Step 5: Solve for x
    x = 51,868,892,938.20/318,713.04
  6. Step 6: Final answer
    x = 162,744.81

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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.