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Finding the Fourth Proportional to 542,415.66, 813,786.09 and 163,348.72

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Solution

The fourth proportional to 542,415.66, 813,786.09 and 163,348.72 is: 245,072.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,415.66 : 813,786.09 = 163,348.72 : x
  2. Step 2: Convert to fraction form
    542,415.66/813,786.09 = 163,348.72/x
  3. Step 3: Cross multiply
    542,415.66x = 813,786.09 × 163,348.72
  4. Step 4: Simplify right side
    542,415.66x = 132,930,914,427.12
  5. Step 5: Solve for x
    x = 132,930,914,427.12/542,415.66
  6. Step 6: Final answer
    x = 245,072.05

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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.