Home / 259,945.20-390,047.40-147,711.60

Finding the Fourth Proportional to 259,945.20, 390,047.40 and 147,711.60

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Solution

The fourth proportional to 259,945.20, 390,047.40 and 147,711.60 is: 221,641.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,945.20 : 390,047.40 = 147,711.60 : x
  2. Step 2: Convert to fraction form
    259,945.20/390,047.40 = 147,711.60/x
  3. Step 3: Cross multiply
    259,945.20x = 390,047.40 × 147,711.60
  4. Step 4: Simplify right side
    259,945.20x = 57,614,525,529.84
  5. Step 5: Solve for x
    x = 57,614,525,529.84/259,945.20
  6. Step 6: Final answer
    x = 221,641.04

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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.