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Finding the Fourth Proportional to 254,350.99, 381,522.58 and 85,989.58

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Solution

The fourth proportional to 254,350.99, 381,522.58 and 85,989.58 is: 128,983.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,350.99 : 381,522.58 = 85,989.58 : x
  2. Step 2: Convert to fraction form
    254,350.99/381,522.58 = 85,989.58/x
  3. Step 3: Cross multiply
    254,350.99x = 381,522.58 × 85,989.58
  4. Step 4: Simplify right side
    254,350.99x = 32,806,966,414.72
  5. Step 5: Solve for x
    x = 32,806,966,414.72/254,350.99
  6. Step 6: Final answer
    x = 128,983.05

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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.