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Finding the Fourth Proportional to 355,121.60, 532,423.20 and 144,651.20

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Solution

The fourth proportional to 355,121.60, 532,423.20 and 144,651.20 is: 216,871.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,121.60 : 532,423.20 = 144,651.20 : x
  2. Step 2: Convert to fraction form
    355,121.60/532,423.20 = 144,651.20/x
  3. Step 3: Cross multiply
    355,121.60x = 532,423.20 × 144,651.20
  4. Step 4: Simplify right side
    355,121.60x = 77,015,654,787.84
  5. Step 5: Solve for x
    x = 77,015,654,787.84/355,121.60
  6. Step 6: Final answer
    x = 216,871.22

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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.