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Finding the Fourth Proportional to 318,992.76, 478,489.13 and 94,335.69

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Solution

The fourth proportional to 318,992.76, 478,489.13 and 94,335.69 is: 141,503.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,992.76 : 478,489.13 = 94,335.69 : x
  2. Step 2: Convert to fraction form
    318,992.76/478,489.13 = 94,335.69/x
  3. Step 3: Cross multiply
    318,992.76x = 478,489.13 × 94,335.69
  4. Step 4: Simplify right side
    318,992.76x = 45,138,602,236.05
  5. Step 5: Solve for x
    x = 45,138,602,236.05/318,992.76
  6. Step 6: Final answer
    x = 141,503.53

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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.