Home / 258,211.17-387,360.48-80,683.26

Finding the Fourth Proportional to 258,211.17, 387,360.48 and 80,683.26

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Solution

The fourth proportional to 258,211.17, 387,360.48 and 80,683.26 is: 121,038.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,211.17 : 387,360.48 = 80,683.26 : x
  2. Step 2: Convert to fraction form
    258,211.17/387,360.48 = 80,683.26/x
  3. Step 3: Cross multiply
    258,211.17x = 387,360.48 × 80,683.26
  4. Step 4: Simplify right side
    258,211.17x = 31,253,506,321.56
  5. Step 5: Solve for x
    x = 31,253,506,321.56/258,211.17
  6. Step 6: Final answer
    x = 121,038.55

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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.