Home / 259,921.06-390,085.72-133,556.20

Finding the Fourth Proportional to 259,921.06, 390,085.72 and 133,556.20

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Solution

The fourth proportional to 259,921.06, 390,085.72 and 133,556.20 is: 200,439.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,921.06 : 390,085.72 = 133,556.20 : x
  2. Step 2: Convert to fraction form
    259,921.06/390,085.72 = 133,556.20/x
  3. Step 3: Cross multiply
    259,921.06x = 390,085.72 × 133,556.20
  4. Step 4: Simplify right side
    259,921.06x = 52,098,366,437.46
  5. Step 5: Solve for x
    x = 52,098,366,437.46/259,921.06
  6. Step 6: Final answer
    x = 200,439.19

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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.