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Finding the Fourth Proportional to 275,477.70, 413,143.65 and 85,937.70

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Solution

The fourth proportional to 275,477.70, 413,143.65 and 85,937.70 is: 128,883.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,477.70 : 413,143.65 = 85,937.70 : x
  2. Step 2: Convert to fraction form
    275,477.70/413,143.65 = 85,937.70/x
  3. Step 3: Cross multiply
    275,477.70x = 413,143.65 × 85,937.70
  4. Step 4: Simplify right side
    275,477.70x = 35,504,615,050.61
  5. Step 5: Solve for x
    x = 35,504,615,050.61/275,477.70
  6. Step 6: Final answer
    x = 128,883.81

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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.