Home / 292,306.40-438,427.20-81,965.60

Finding the Fourth Proportional to 292,306.40, 438,427.20 and 81,965.60

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Solution

The fourth proportional to 292,306.40, 438,427.20 and 81,965.60 is: 122,939.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,306.40 : 438,427.20 = 81,965.60 : x
  2. Step 2: Convert to fraction form
    292,306.40/438,427.20 = 81,965.60/x
  3. Step 3: Cross multiply
    292,306.40x = 438,427.20 × 81,965.60
  4. Step 4: Simplify right side
    292,306.40x = 35,935,948,504.32
  5. Step 5: Solve for x
    x = 35,935,948,504.32/292,306.40
  6. Step 6: Final answer
    x = 122,939.31

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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.