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Finding the Fourth Proportional to 341,780.80, 512,671.20 and 142,034.80

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Solution

The fourth proportional to 341,780.80, 512,671.20 and 142,034.80 is: 213,052.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,780.80 : 512,671.20 = 142,034.80 : x
  2. Step 2: Convert to fraction form
    341,780.80/512,671.20 = 142,034.80/x
  3. Step 3: Cross multiply
    341,780.80x = 512,671.20 × 142,034.80
  4. Step 4: Simplify right side
    341,780.80x = 72,817,151,357.76
  5. Step 5: Solve for x
    x = 72,817,151,357.76/341,780.80
  6. Step 6: Final answer
    x = 213,052.20

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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.