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Finding the Fourth Proportional to 292,359.78, 403,456.55 and 158,223.78

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Solution

The fourth proportional to 292,359.78, 403,456.55 and 158,223.78 is: 218,348.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,359.78 : 403,456.55 = 158,223.78 : x
  2. Step 2: Convert to fraction form
    292,359.78/403,456.55 = 158,223.78/x
  3. Step 3: Cross multiply
    292,359.78x = 403,456.55 × 158,223.78
  4. Step 4: Simplify right side
    292,359.78x = 63,836,419,615.64
  5. Step 5: Solve for x
    x = 63,836,419,615.64/292,359.78
  6. Step 6: Final answer
    x = 218,348.84

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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.