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Finding the Fourth Proportional to 292,781.21, 404,034.75 and 158,645.21

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Solution

The fourth proportional to 292,781.21, 404,034.75 and 158,645.21 is: 218,928.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,781.21 : 404,034.75 = 158,645.21 : x
  2. Step 2: Convert to fraction form
    292,781.21/404,034.75 = 158,645.21/x
  3. Step 3: Cross multiply
    292,781.21x = 404,034.75 × 158,645.21
  4. Step 4: Simplify right side
    292,781.21x = 64,098,175,740.87
  5. Step 5: Solve for x
    x = 64,098,175,740.87/292,781.21
  6. Step 6: Final answer
    x = 218,928.59

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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.