Home / 387,129.95-580,775.75-195,112.29

Finding the Fourth Proportional to 387,129.95, 580,775.75 and 195,112.29

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Solution

The fourth proportional to 387,129.95, 580,775.75 and 195,112.29 is: 292,709.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,129.95 : 580,775.75 = 195,112.29 : x
  2. Step 2: Convert to fraction form
    387,129.95/580,775.75 = 195,112.29/x
  3. Step 3: Cross multiply
    387,129.95x = 580,775.75 × 195,112.29
  4. Step 4: Simplify right side
    387,129.95x = 113,316,485,583.41
  5. Step 5: Solve for x
    x = 113,316,485,583.41/387,129.95
  6. Step 6: Final answer
    x = 292,709.17

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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.