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Finding the Fourth Proportional to 463,543.73, 639,675.40 and 256,803.61

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Solution

The fourth proportional to 463,543.73, 639,675.40 and 256,803.61 is: 354,380.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,543.73 : 639,675.40 = 256,803.61 : x
  2. Step 2: Convert to fraction form
    463,543.73/639,675.40 = 256,803.61/x
  3. Step 3: Cross multiply
    463,543.73x = 639,675.40 × 256,803.61
  4. Step 4: Simplify right side
    463,543.73x = 164,270,951,223.64
  5. Step 5: Solve for x
    x = 164,270,951,223.64/463,543.73
  6. Step 6: Final answer
    x = 354,380.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.