Home / 275,279.10-412,251.93-139,987.23

Finding the Fourth Proportional to 275,279.10, 412,251.93 and 139,987.23

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Solution

The fourth proportional to 275,279.10, 412,251.93 and 139,987.23 is: 209,641.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,279.10 : 412,251.93 = 139,987.23 : x
  2. Step 2: Convert to fraction form
    275,279.10/412,251.93 = 139,987.23/x
  3. Step 3: Cross multiply
    275,279.10x = 412,251.93 × 139,987.23
  4. Step 4: Simplify right side
    275,279.10x = 57,710,005,742.85
  5. Step 5: Solve for x
    x = 57,710,005,742.85/275,279.10
  6. Step 6: Final answer
    x = 209,641.80

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1.5x scale

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.