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Finding the Fourth Proportional to 387,758.88, 535,073.04 and 215,669.52

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Solution

The fourth proportional to 387,758.88, 535,073.04 and 215,669.52 is: 297,604.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,758.88 : 535,073.04 = 215,669.52 : x
  2. Step 2: Convert to fraction form
    387,758.88/535,073.04 = 215,669.52/x
  3. Step 3: Cross multiply
    387,758.88x = 535,073.04 × 215,669.52
  4. Step 4: Simplify right side
    387,758.88x = 115,398,945,701.74
  5. Step 5: Solve for x
    x = 115,398,945,701.74/387,758.88
  6. Step 6: Final answer
    x = 297,604.91

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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.