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Finding the Fourth Proportional to 392,670.59, 541,853.55 and 220,579.20

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Solution

The fourth proportional to 392,670.59, 541,853.55 and 220,579.20 is: 304,381.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,670.59 : 541,853.55 = 220,579.20 : x
  2. Step 2: Convert to fraction form
    392,670.59/541,853.55 = 220,579.20/x
  3. Step 3: Cross multiply
    392,670.59x = 541,853.55 × 220,579.20
  4. Step 4: Simplify right side
    392,670.59x = 119,521,622,576.16
  5. Step 5: Solve for x
    x = 119,521,622,576.16/392,670.59
  6. Step 6: Final answer
    x = 304,381.40

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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.