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Finding the Fourth Proportional to 393,295.15, 542,788.92 and 240,422.80

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Solution

The fourth proportional to 393,295.15, 542,788.92 and 240,422.80 is: 331,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,295.15 : 542,788.92 = 240,422.80 : x
  2. Step 2: Convert to fraction form
    393,295.15/542,788.92 = 240,422.80/x
  3. Step 3: Cross multiply
    393,295.15x = 542,788.92 × 240,422.80
  4. Step 4: Simplify right side
    393,295.15x = 130,498,831,955.38
  5. Step 5: Solve for x
    x = 130,498,831,955.38/393,295.15
  6. Step 6: Final answer
    x = 331,808.90

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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.