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Finding the Fourth Proportional to 393,280.56, 542,768.82 and 240,408.24

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Solution

The fourth proportional to 393,280.56, 542,768.82 and 240,408.24 is: 331,788.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,280.56 : 542,768.82 = 240,408.24 : x
  2. Step 2: Convert to fraction form
    393,280.56/542,768.82 = 240,408.24/x
  3. Step 3: Cross multiply
    393,280.56x = 542,768.82 × 240,408.24
  4. Step 4: Simplify right side
    393,280.56x = 130,486,093,806.16
  5. Step 5: Solve for x
    x = 130,486,093,806.16/393,280.56
  6. Step 6: Final answer
    x = 331,788.82

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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.