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Finding the Fourth Proportional to 261,195.84, 391,798.08 and 74,200.32

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Solution

The fourth proportional to 261,195.84, 391,798.08 and 74,200.32 is: 111,301.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,195.84 : 391,798.08 = 74,200.32 : x
  2. Step 2: Convert to fraction form
    261,195.84/391,798.08 = 74,200.32/x
  3. Step 3: Cross multiply
    261,195.84x = 391,798.08 × 74,200.32
  4. Step 4: Simplify right side
    261,195.84x = 29,071,542,911.39
  5. Step 5: Solve for x
    x = 29,071,542,911.39/261,195.84
  6. Step 6: Final answer
    x = 111,301.71

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1.5x scale

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.