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Finding the Fourth Proportional to 387,160.70, 534,264.41 and 215,090.73

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Solution

The fourth proportional to 387,160.70, 534,264.41 and 215,090.73 is: 296,815.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,160.70 : 534,264.41 = 215,090.73 : x
  2. Step 2: Convert to fraction form
    387,160.70/534,264.41 = 215,090.73/x
  3. Step 3: Cross multiply
    387,160.70x = 534,264.41 × 215,090.73
  4. Step 4: Simplify right side
    387,160.70x = 114,915,319,288.60
  5. Step 5: Solve for x
    x = 114,915,319,288.60/387,160.70
  6. Step 6: Final answer
    x = 296,815.56

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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.