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Finding the Fourth Proportional to 265,705.53, 398,218.05 and 145,760.73

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Solution

The fourth proportional to 265,705.53, 398,218.05 and 145,760.73 is: 218,454.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,705.53 : 398,218.05 = 145,760.73 : x
  2. Step 2: Convert to fraction form
    265,705.53/398,218.05 = 145,760.73/x
  3. Step 3: Cross multiply
    265,705.53x = 398,218.05 × 145,760.73
  4. Step 4: Simplify right side
    265,705.53x = 58,044,553,667.18
  5. Step 5: Solve for x
    x = 58,044,553,667.18/265,705.53
  6. Step 6: Final answer
    x = 218,454.44

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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.