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Finding the Fourth Proportional to 321,460.62, 482,125.05 and 121,712.10

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Solution

The fourth proportional to 321,460.62, 482,125.05 and 121,712.10 is: 182,543.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,460.62 : 482,125.05 = 121,712.10 : x
  2. Step 2: Convert to fraction form
    321,460.62/482,125.05 = 121,712.10/x
  3. Step 3: Cross multiply
    321,460.62x = 482,125.05 × 121,712.10
  4. Step 4: Simplify right side
    321,460.62x = 58,680,452,298.11
  5. Step 5: Solve for x
    x = 58,680,452,298.11/321,460.62
  6. Step 6: Final answer
    x = 182,543.21

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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.