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Finding the Fourth Proportional to 240,626.60, 360,869.82 and 72,140.20

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Solution

The fourth proportional to 240,626.60, 360,869.82 and 72,140.20 is: 108,189.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,626.60 : 360,869.82 = 72,140.20 : x
  2. Step 2: Convert to fraction form
    240,626.60/360,869.82 = 72,140.20/x
  3. Step 3: Cross multiply
    240,626.60x = 360,869.82 × 72,140.20
  4. Step 4: Simplify right side
    240,626.60x = 26,033,220,988.76
  5. Step 5: Solve for x
    x = 26,033,220,988.76/240,626.60
  6. Step 6: Final answer
    x = 108,189.29

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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.