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Finding the Fourth Proportional to 542,843.40, 814,265.10 and 243,005.70

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Solution

The fourth proportional to 542,843.40, 814,265.10 and 243,005.70 is: 364,508.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,843.40 : 814,265.10 = 243,005.70 : x
  2. Step 2: Convert to fraction form
    542,843.40/814,265.10 = 243,005.70/x
  3. Step 3: Cross multiply
    542,843.40x = 814,265.10 × 243,005.70
  4. Step 4: Simplify right side
    542,843.40x = 197,871,060,611.07
  5. Step 5: Solve for x
    x = 197,871,060,611.07/542,843.40
  6. Step 6: Final answer
    x = 364,508.55

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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.