Home / 258,747.86-387,990.51-118,386.20

Finding the Fourth Proportional to 258,747.86, 387,990.51 and 118,386.20

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Solution

The fourth proportional to 258,747.86, 387,990.51 and 118,386.20 is: 177,519.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,747.86 : 387,990.51 = 118,386.20 : x
  2. Step 2: Convert to fraction form
    258,747.86/387,990.51 = 118,386.20/x
  3. Step 3: Cross multiply
    258,747.86x = 387,990.51 × 118,386.20
  4. Step 4: Simplify right side
    258,747.86x = 45,932,720,175.01
  5. Step 5: Solve for x
    x = 45,932,720,175.01/258,747.86
  6. Step 6: Final answer
    x = 177,519.23

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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.