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Finding the Fourth Proportional to 542,853.40, 814,280.10 and 243,015.70

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Solution

The fourth proportional to 542,853.40, 814,280.10 and 243,015.70 is: 364,523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,853.40 : 814,280.10 = 243,015.70 : x
  2. Step 2: Convert to fraction form
    542,853.40/814,280.10 = 243,015.70/x
  3. Step 3: Cross multiply
    542,853.40x = 814,280.10 × 243,015.70
  4. Step 4: Simplify right side
    542,853.40x = 197,882,848,497.57
  5. Step 5: Solve for x
    x = 197,882,848,497.57/542,853.40
  6. Step 6: Final answer
    x = 364,523.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.