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Finding the Fourth Proportional to 387,760.88, 535,102.32 and 215,675.14

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Solution

The fourth proportional to 387,760.88, 535,102.32 and 215,675.14 is: 297,627.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,760.88 : 535,102.32 = 215,675.14 : x
  2. Step 2: Convert to fraction form
    387,760.88/535,102.32 = 215,675.14/x
  3. Step 3: Cross multiply
    387,760.88x = 535,102.32 × 215,675.14
  4. Step 4: Simplify right side
    387,760.88x = 115,408,267,780.33
  5. Step 5: Solve for x
    x = 115,408,267,780.33/387,760.88
  6. Step 6: Final answer
    x = 297,627.41

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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.