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Finding the Fourth Proportional to 460,863.60, 691,295.40 and 145,417.20

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Solution

The fourth proportional to 460,863.60, 691,295.40 and 145,417.20 is: 218,125.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,863.60 : 691,295.40 = 145,417.20 : x
  2. Step 2: Convert to fraction form
    460,863.60/691,295.40 = 145,417.20/x
  3. Step 3: Cross multiply
    460,863.60x = 691,295.40 × 145,417.20
  4. Step 4: Simplify right side
    460,863.60x = 100,526,241,440.88
  5. Step 5: Solve for x
    x = 100,526,241,440.88/460,863.60
  6. Step 6: Final answer
    x = 218,125.80

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Similar ratio
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1.5x scale

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.