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Finding the Fourth Proportional to 318,572.57, 477,941.61 and 118,894.47

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Solution

The fourth proportional to 318,572.57, 477,941.61 and 118,894.47 is: 178,372.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,572.57 : 477,941.61 = 118,894.47 : x
  2. Step 2: Convert to fraction form
    318,572.57/477,941.61 = 118,894.47/x
  3. Step 3: Cross multiply
    318,572.57x = 477,941.61 × 118,894.47
  4. Step 4: Simplify right side
    318,572.57x = 56,824,614,411.90
  5. Step 5: Solve for x
    x = 56,824,614,411.90/318,572.57
  6. Step 6: Final answer
    x = 178,372.59

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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.