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Finding the Fourth Proportional to 315,954.18, 473,861.43 and 91,265.85

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Solution

The fourth proportional to 315,954.18, 473,861.43 and 91,265.85 is: 136,878.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,954.18 : 473,861.43 = 91,265.85 : x
  2. Step 2: Convert to fraction form
    315,954.18/473,861.43 = 91,265.85/x
  3. Step 3: Cross multiply
    315,954.18x = 473,861.43 × 91,265.85
  4. Step 4: Simplify right side
    315,954.18x = 43,247,366,191.17
  5. Step 5: Solve for x
    x = 43,247,366,191.17/315,954.18
  6. Step 6: Final answer
    x = 136,878.60

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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.