Home / 318,868.48-478,330.25-82,209.16

Finding the Fourth Proportional to 318,868.48, 478,330.25 and 82,209.16

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Solution

The fourth proportional to 318,868.48, 478,330.25 and 82,209.16 is: 123,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,868.48 : 478,330.25 = 82,209.16 : x
  2. Step 2: Convert to fraction form
    318,868.48/478,330.25 = 82,209.16/x
  3. Step 3: Cross multiply
    318,868.48x = 478,330.25 × 82,209.16
  4. Step 4: Simplify right side
    318,868.48x = 39,323,125,252.39
  5. Step 5: Solve for x
    x = 39,323,125,252.39/318,868.48
  6. Step 6: Final answer
    x = 123,320.83

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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.