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Finding the Fourth Proportional to 382,447.80, 573,671.70 and 256,476.60

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Solution

The fourth proportional to 382,447.80, 573,671.70 and 256,476.60 is: 384,714.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,447.80 : 573,671.70 = 256,476.60 : x
  2. Step 2: Convert to fraction form
    382,447.80/573,671.70 = 256,476.60/x
  3. Step 3: Cross multiply
    382,447.80x = 573,671.70 × 256,476.60
  4. Step 4: Simplify right side
    382,447.80x = 147,133,367,132.22
  5. Step 5: Solve for x
    x = 147,133,367,132.22/382,447.80
  6. Step 6: Final answer
    x = 384,714.90

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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.