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Finding the Fourth Proportional to 387,159.04, 580,755.84 and 120,924.80

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Solution

The fourth proportional to 387,159.04, 580,755.84 and 120,924.80 is: 181,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,159.04 : 580,755.84 = 120,924.80 : x
  2. Step 2: Convert to fraction form
    387,159.04/580,755.84 = 120,924.80/x
  3. Step 3: Cross multiply
    387,159.04x = 580,755.84 × 120,924.80
  4. Step 4: Simplify right side
    387,159.04x = 70,227,783,800.83
  5. Step 5: Solve for x
    x = 70,227,783,800.83/387,159.04
  6. Step 6: Final answer
    x = 181,392.60

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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.