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Finding the Fourth Proportional to 393,187.34, 542,580.65 and 240,481.28

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Solution

The fourth proportional to 393,187.34, 542,580.65 and 240,481.28 is: 331,853.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,187.34 : 542,580.65 = 240,481.28 : x
  2. Step 2: Convert to fraction form
    393,187.34/542,580.65 = 240,481.28/x
  3. Step 3: Cross multiply
    393,187.34x = 542,580.65 × 240,481.28
  4. Step 4: Simplify right side
    393,187.34x = 130,480,489,215.23
  5. Step 5: Solve for x
    x = 130,480,489,215.23/393,187.34
  6. Step 6: Final answer
    x = 331,853.23

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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.