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Finding the Fourth Proportional to 321,787.70, 482,681.55 and 203,074.10

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Solution

The fourth proportional to 321,787.70, 482,681.55 and 203,074.10 is: 304,611.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,787.70 : 482,681.55 = 203,074.10 : x
  2. Step 2: Convert to fraction form
    321,787.70/482,681.55 = 203,074.10/x
  3. Step 3: Cross multiply
    321,787.70x = 482,681.55 × 203,074.10
  4. Step 4: Simplify right side
    321,787.70x = 98,020,121,352.86
  5. Step 5: Solve for x
    x = 98,020,121,352.86/321,787.70
  6. Step 6: Final answer
    x = 304,611.15

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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.