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Finding the Fourth Proportional to 318,741.76, 478,928.64 and 240,592

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Solution

The fourth proportional to 318,741.76, 478,928.64 and 240,592 is: 361,503.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,741.76 : 478,928.64 = 240,592 : x
  2. Step 2: Convert to fraction form
    318,741.76/478,928.64 = 240,592/x
  3. Step 3: Cross multiply
    318,741.76x = 478,928.64 × 240,592
  4. Step 4: Simplify right side
    318,741.76x = 115,226,399,354.88
  5. Step 5: Solve for x
    x = 115,226,399,354.88/318,741.76
  6. Step 6: Final answer
    x = 361,503.93

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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.