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Finding the Fourth Proportional to 542,008.40, 813,012.60 and 168,069.20

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Solution

The fourth proportional to 542,008.40, 813,012.60 and 168,069.20 is: 252,103.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,008.40 : 813,012.60 = 168,069.20 : x
  2. Step 2: Convert to fraction form
    542,008.40/813,012.60 = 168,069.20/x
  3. Step 3: Cross multiply
    542,008.40x = 813,012.60 × 168,069.20
  4. Step 4: Simplify right side
    542,008.40x = 136,642,377,271.92
  5. Step 5: Solve for x
    x = 136,642,377,271.92/542,008.40
  6. Step 6: Final answer
    x = 252,103.80

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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.