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Finding the Fourth Proportional to 255,056.16, 382,630.68 and 84,287.64

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Solution

The fourth proportional to 255,056.16, 382,630.68 and 84,287.64 is: 126,446.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,056.16 : 382,630.68 = 84,287.64 : x
  2. Step 2: Convert to fraction form
    255,056.16/382,630.68 = 84,287.64/x
  3. Step 3: Cross multiply
    255,056.16x = 382,630.68 × 84,287.64
  4. Step 4: Simplify right side
    255,056.16x = 32,251,037,008.80
  5. Step 5: Solve for x
    x = 32,251,037,008.80/255,056.16
  6. Step 6: Final answer
    x = 126,446.81

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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.