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Finding the Fourth Proportional to 318,987.12, 478,582.24 and 94,348.88

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Solution

The fourth proportional to 318,987.12, 478,582.24 and 94,348.88 is: 141,553.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,987.12 : 478,582.24 = 94,348.88 : x
  2. Step 2: Convert to fraction form
    318,987.12/478,582.24 = 94,348.88/x
  3. Step 3: Cross multiply
    318,987.12x = 478,582.24 × 94,348.88
  4. Step 4: Simplify right side
    318,987.12x = 45,153,698,331.89
  5. Step 5: Solve for x
    x = 45,153,698,331.89/318,987.12
  6. Step 6: Final answer
    x = 141,553.36

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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.