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Finding the Fourth Proportional to 454,064.70, 681,097.05 and 121,640.70

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Solution

The fourth proportional to 454,064.70, 681,097.05 and 121,640.70 is: 182,461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,064.70 : 681,097.05 = 121,640.70 : x
  2. Step 2: Convert to fraction form
    454,064.70/681,097.05 = 121,640.70/x
  3. Step 3: Cross multiply
    454,064.70x = 681,097.05 × 121,640.70
  4. Step 4: Simplify right side
    454,064.70x = 82,849,121,929.94
  5. Step 5: Solve for x
    x = 82,849,121,929.94/454,064.70
  6. Step 6: Final answer
    x = 182,461.05

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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.