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Finding the Fourth Proportional to 254,244.30, 381,354.30 and 85,748.10

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Solution

The fourth proportional to 254,244.30, 381,354.30 and 85,748.10 is: 128,618.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,244.30 : 381,354.30 = 85,748.10 : x
  2. Step 2: Convert to fraction form
    254,244.30/381,354.30 = 85,748.10/x
  3. Step 3: Cross multiply
    254,244.30x = 381,354.30 × 85,748.10
  4. Step 4: Simplify right side
    254,244.30x = 32,700,406,651.83
  5. Step 5: Solve for x
    x = 32,700,406,651.83/254,244.30
  6. Step 6: Final answer
    x = 128,618.05

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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.