Home / 392,288.20-539,658.78-343,671.16

Finding the Fourth Proportional to 392,288.20, 539,658.78 and 343,671.16

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Solution

The fourth proportional to 392,288.20, 539,658.78 and 343,671.16 is: 472,777.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,288.20 : 539,658.78 = 343,671.16 : x
  2. Step 2: Convert to fraction form
    392,288.20/539,658.78 = 343,671.16/x
  3. Step 3: Cross multiply
    392,288.20x = 539,658.78 × 343,671.16
  4. Step 4: Simplify right side
    392,288.20x = 185,465,158,926.79
  5. Step 5: Solve for x
    x = 185,465,158,926.79/392,288.20
  6. Step 6: Final answer
    x = 472,777.82

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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.