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Finding the Fourth Proportional to 542,820.10, 814,230.15 and 343,365.70

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Solution

The fourth proportional to 542,820.10, 814,230.15 and 343,365.70 is: 515,048.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,820.10 : 814,230.15 = 343,365.70 : x
  2. Step 2: Convert to fraction form
    542,820.10/814,230.15 = 343,365.70/x
  3. Step 3: Cross multiply
    542,820.10x = 814,230.15 × 343,365.70
  4. Step 4: Simplify right side
    542,820.10x = 279,578,705,415.86
  5. Step 5: Solve for x
    x = 279,578,705,415.86/542,820.10
  6. Step 6: Final answer
    x = 515,048.55

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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.