Home / 258,014.10-387,021.15-156,974.70

Finding the Fourth Proportional to 258,014.10, 387,021.15 and 156,974.70

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Solution

The fourth proportional to 258,014.10, 387,021.15 and 156,974.70 is: 235,462.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,014.10 : 387,021.15 = 156,974.70 : x
  2. Step 2: Convert to fraction form
    258,014.10/387,021.15 = 156,974.70/x
  3. Step 3: Cross multiply
    258,014.10x = 387,021.15 × 156,974.70
  4. Step 4: Simplify right side
    258,014.10x = 60,752,528,914.91
  5. Step 5: Solve for x
    x = 60,752,528,914.91/258,014.10
  6. Step 6: Final answer
    x = 235,462.05

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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.