Home / 387,172.47-580,738.05-120,902.52

Finding the Fourth Proportional to 387,172.47, 580,738.05 and 120,902.52

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Solution

The fourth proportional to 387,172.47, 580,738.05 and 120,902.52 is: 181,347.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,172.47 : 580,738.05 = 120,902.52 : x
  2. Step 2: Convert to fraction form
    387,172.47/580,738.05 = 120,902.52/x
  3. Step 3: Cross multiply
    387,172.47x = 580,738.05 × 120,902.52
  4. Step 4: Simplify right side
    387,172.47x = 70,212,693,704.89
  5. Step 5: Solve for x
    x = 70,212,693,704.89/387,172.47
  6. Step 6: Final answer
    x = 181,347.33

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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.