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Finding the Fourth Proportional to 144,524.40, 216,640.80 and 65,695.20

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Solution

The fourth proportional to 144,524.40, 216,640.80 and 65,695.20 is: 98,476.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,524.40 : 216,640.80 = 65,695.20 : x
  2. Step 2: Convert to fraction form
    144,524.40/216,640.80 = 65,695.20/x
  3. Step 3: Cross multiply
    144,524.40x = 216,640.80 × 65,695.20
  4. Step 4: Simplify right side
    144,524.40x = 14,232,260,684.16
  5. Step 5: Solve for x
    x = 14,232,260,684.16/144,524.40
  6. Step 6: Final answer
    x = 98,476.52

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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.