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Finding the Fourth Proportional to 256,051.92, 384,031.44 and 69,019.68

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Solution

The fourth proportional to 256,051.92, 384,031.44 and 69,019.68 is: 103,517.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,051.92 : 384,031.44 = 69,019.68 : x
  2. Step 2: Convert to fraction form
    256,051.92/384,031.44 = 69,019.68/x
  3. Step 3: Cross multiply
    256,051.92x = 384,031.44 × 69,019.68
  4. Step 4: Simplify right side
    256,051.92x = 26,505,727,098.74
  5. Step 5: Solve for x
    x = 26,505,727,098.74/256,051.92
  6. Step 6: Final answer
    x = 103,517.00

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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.