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Finding the Fourth Proportional to 260,895.60, 391,392.56 and 98,838.19

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Solution

The fourth proportional to 260,895.60, 391,392.56 and 98,838.19 is: 148,275.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,895.60 : 391,392.56 = 98,838.19 : x
  2. Step 2: Convert to fraction form
    260,895.60/391,392.56 = 98,838.19/x
  3. Step 3: Cross multiply
    260,895.60x = 391,392.56 × 98,838.19
  4. Step 4: Simplify right side
    260,895.60x = 38,684,532,209.87
  5. Step 5: Solve for x
    x = 38,684,532,209.87/260,895.60
  6. Step 6: Final answer
    x = 148,275.91

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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.