Home / 254,226.10-381,715.80-142,130.20

Finding the Fourth Proportional to 254,226.10, 381,715.80 and 142,130.20

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Solution

The fourth proportional to 254,226.10, 381,715.80 and 142,130.20 is: 213,405.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,226.10 : 381,715.80 = 142,130.20 : x
  2. Step 2: Convert to fraction form
    254,226.10/381,715.80 = 142,130.20/x
  3. Step 3: Cross multiply
    254,226.10x = 381,715.80 × 142,130.20
  4. Step 4: Simplify right side
    254,226.10x = 54,253,342,997.16
  5. Step 5: Solve for x
    x = 54,253,342,997.16/254,226.10
  6. Step 6: Final answer
    x = 213,405.87

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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.