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Finding the Fourth Proportional to 318,992.13, 478,488.20 and 94,335.06

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Solution

The fourth proportional to 318,992.13, 478,488.20 and 94,335.06 is: 141,502.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,992.13 : 478,488.20 = 94,335.06 : x
  2. Step 2: Convert to fraction form
    318,992.13/478,488.20 = 94,335.06/x
  3. Step 3: Cross multiply
    318,992.13x = 478,488.20 × 94,335.06
  4. Step 4: Simplify right side
    318,992.13x = 45,138,212,584.62
  5. Step 5: Solve for x
    x = 45,138,212,584.62/318,992.13
  6. Step 6: Final answer
    x = 141,502.59

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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.