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Finding the Fourth Proportional to 256,019.68, 383,983.36 and 68,987.52

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Solution

The fourth proportional to 256,019.68, 383,983.36 and 68,987.52 is: 103,468.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,019.68 : 383,983.36 = 68,987.52 : x
  2. Step 2: Convert to fraction form
    256,019.68/383,983.36 = 68,987.52/x
  3. Step 3: Cross multiply
    256,019.68x = 383,983.36 × 68,987.52
  4. Step 4: Simplify right side
    256,019.68x = 26,490,059,727.67
  5. Step 5: Solve for x
    x = 26,490,059,727.67/256,019.68
  6. Step 6: Final answer
    x = 103,468.84

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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.