Home / 258,746.85-387,317.57-140,123.97

Finding the Fourth Proportional to 258,746.85, 387,317.57 and 140,123.97

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Solution

The fourth proportional to 258,746.85, 387,317.57 and 140,123.97 is: 209,751.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,746.85 : 387,317.57 = 140,123.97 : x
  2. Step 2: Convert to fraction form
    258,746.85/387,317.57 = 140,123.97/x
  3. Step 3: Cross multiply
    258,746.85x = 387,317.57 × 140,123.97
  4. Step 4: Simplify right side
    258,746.85x = 54,272,474,858.53
  5. Step 5: Solve for x
    x = 54,272,474,858.53/258,746.85
  6. Step 6: Final answer
    x = 209,751.25

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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.