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Finding the Fourth Proportional to 542,111.80, 813,167.70 and 290,169.40

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Solution

The fourth proportional to 542,111.80, 813,167.70 and 290,169.40 is: 435,254.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,111.80 : 813,167.70 = 290,169.40 : x
  2. Step 2: Convert to fraction form
    542,111.80/813,167.70 = 290,169.40/x
  3. Step 3: Cross multiply
    542,111.80x = 813,167.70 × 290,169.40
  4. Step 4: Simplify right side
    542,111.80x = 235,956,383,608.38
  5. Step 5: Solve for x
    x = 235,956,383,608.38/542,111.80
  6. Step 6: Final answer
    x = 435,254.10

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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.