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Finding the Fourth Proportional to 253,895.24, 380,875.62 and 85,342.88

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Solution

The fourth proportional to 253,895.24, 380,875.62 and 85,342.88 is: 128,025.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,895.24 : 380,875.62 = 85,342.88 : x
  2. Step 2: Convert to fraction form
    253,895.24/380,875.62 = 85,342.88/x
  3. Step 3: Cross multiply
    253,895.24x = 380,875.62 × 85,342.88
  4. Step 4: Simplify right side
    253,895.24x = 32,505,022,332.59
  5. Step 5: Solve for x
    x = 32,505,022,332.59/253,895.24
  6. Step 6: Final answer
    x = 128,025.33

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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.