Home / 387,128.45-580,560.27-147,184.49

Finding the Fourth Proportional to 387,128.45, 580,560.27 and 147,184.49

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Solution

The fourth proportional to 387,128.45, 580,560.27 and 147,184.49 is: 220,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,128.45 : 580,560.27 = 147,184.49 : x
  2. Step 2: Convert to fraction form
    387,128.45/580,560.27 = 147,184.49/x
  3. Step 3: Cross multiply
    387,128.45x = 580,560.27 × 147,184.49
  4. Step 4: Simplify right side
    387,128.45x = 85,449,467,254.21
  5. Step 5: Solve for x
    x = 85,449,467,254.21/387,128.45
  6. Step 6: Final answer
    x = 220,726.40

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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.