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Finding the Fourth Proportional to 318,962.82, 478,487.97 and 94,340.91

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Solution

The fourth proportional to 318,962.82, 478,487.97 and 94,340.91 is: 141,524.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,962.82 : 478,487.97 = 94,340.91 : x
  2. Step 2: Convert to fraction form
    318,962.82/478,487.97 = 94,340.91/x
  3. Step 3: Cross multiply
    318,962.82x = 478,487.97 × 94,340.91
  4. Step 4: Simplify right side
    318,962.82x = 45,140,990,513.85
  5. Step 5: Solve for x
    x = 45,140,990,513.85/318,962.82
  6. Step 6: Final answer
    x = 141,524.30

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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.