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Finding the Fourth Proportional to 415,781.84, 573,396.36 and 272,489.84

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Solution

The fourth proportional to 415,781.84, 573,396.36 and 272,489.84 is: 375,785.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,781.84 : 573,396.36 = 272,489.84 : x
  2. Step 2: Convert to fraction form
    415,781.84/573,396.36 = 272,489.84/x
  3. Step 3: Cross multiply
    415,781.84x = 573,396.36 × 272,489.84
  4. Step 4: Simplify right side
    415,781.84x = 156,244,682,392.98
  5. Step 5: Solve for x
    x = 156,244,682,392.98/415,781.84
  6. Step 6: Final answer
    x = 375,785.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.