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Finding the Fourth Proportional to 542,847.40, 814,271.10 and 243,009.70

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Solution

The fourth proportional to 542,847.40, 814,271.10 and 243,009.70 is: 364,514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,847.40 : 814,271.10 = 243,009.70 : x
  2. Step 2: Convert to fraction form
    542,847.40/814,271.10 = 243,009.70/x
  3. Step 3: Cross multiply
    542,847.40x = 814,271.10 × 243,009.70
  4. Step 4: Simplify right side
    542,847.40x = 197,875,775,729.67
  5. Step 5: Solve for x
    x = 197,875,775,729.67/542,847.40
  6. Step 6: Final answer
    x = 364,514.55

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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.