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Finding the Fourth Proportional to 318,779.67, 478,056.95 and 94,080

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Solution

The fourth proportional to 318,779.67, 478,056.95 and 94,080 is: 141,086.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,779.67 : 478,056.95 = 94,080 : x
  2. Step 2: Convert to fraction form
    318,779.67/478,056.95 = 94,080/x
  3. Step 3: Cross multiply
    318,779.67x = 478,056.95 × 94,080
  4. Step 4: Simplify right side
    318,779.67x = 44,975,597,856
  5. Step 5: Solve for x
    x = 44,975,597,856/318,779.67
  6. Step 6: Final answer
    x = 141,086.78

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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.