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Finding the Fourth Proportional to 355,287.60, 532,672.20 and 144,817.20

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Solution

The fourth proportional to 355,287.60, 532,672.20 and 144,817.20 is: 217,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,287.60 : 532,672.20 = 144,817.20 : x
  2. Step 2: Convert to fraction form
    355,287.60/532,672.20 = 144,817.20/x
  3. Step 3: Cross multiply
    355,287.60x = 532,672.20 × 144,817.20
  4. Step 4: Simplify right side
    355,287.60x = 77,140,096,521.84
  5. Step 5: Solve for x
    x = 77,140,096,521.84/355,287.60
  6. Step 6: Final answer
    x = 217,120.15

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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.