Home / 387,754.04-535,091.18-215,671.43

Finding the Fourth Proportional to 387,754.04, 535,091.18 and 215,671.43

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Solution

The fourth proportional to 387,754.04, 535,091.18 and 215,671.43 is: 297,621.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,754.04 : 535,091.18 = 215,671.43 : x
  2. Step 2: Convert to fraction form
    387,754.04/535,091.18 = 215,671.43/x
  3. Step 3: Cross multiply
    387,754.04x = 535,091.18 × 215,671.43
  4. Step 4: Simplify right side
    387,754.04x = 115,403,876,217.17
  5. Step 5: Solve for x
    x = 115,403,876,217.17/387,754.04
  6. Step 6: Final answer
    x = 297,621.34

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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.