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Finding the Fourth Proportional to 542,840.90, 814,261.35 and 243,003.20

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Solution

The fourth proportional to 542,840.90, 814,261.35 and 243,003.20 is: 364,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,840.90 : 814,261.35 = 243,003.20 : x
  2. Step 2: Convert to fraction form
    542,840.90/814,261.35 = 243,003.20/x
  3. Step 3: Cross multiply
    542,840.90x = 814,261.35 × 243,003.20
  4. Step 4: Simplify right side
    542,840.90x = 197,868,113,686.32
  5. Step 5: Solve for x
    x = 197,868,113,686.32/542,840.90
  6. Step 6: Final answer
    x = 364,504.80

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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.