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Finding the Fourth Proportional to 265,504.57, 398,109.20 and 87,914.70

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Solution

The fourth proportional to 265,504.57, 398,109.20 and 87,914.70 is: 131,823.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,504.57 : 398,109.20 = 87,914.70 : x
  2. Step 2: Convert to fraction form
    265,504.57/398,109.20 = 87,914.70/x
  3. Step 3: Cross multiply
    265,504.57x = 398,109.20 × 87,914.70
  4. Step 4: Simplify right side
    265,504.57x = 34,999,650,445.67
  5. Step 5: Solve for x
    x = 34,999,650,445.67/265,504.57
  6. Step 6: Final answer
    x = 131,823.16

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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.