Home / 259,740.20-389,610.30-166,428.20

Finding the Fourth Proportional to 259,740.20, 389,610.30 and 166,428.20

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Solution

The fourth proportional to 259,740.20, 389,610.30 and 166,428.20 is: 249,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,740.20 : 389,610.30 = 166,428.20 : x
  2. Step 2: Convert to fraction form
    259,740.20/389,610.30 = 166,428.20/x
  3. Step 3: Cross multiply
    259,740.20x = 389,610.30 × 166,428.20
  4. Step 4: Simplify right side
    259,740.20x = 64,842,140,930.46
  5. Step 5: Solve for x
    x = 64,842,140,930.46/259,740.20
  6. Step 6: Final answer
    x = 249,642.30

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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.