Home / 260,309.43-390,501.18-80,410.14

Finding the Fourth Proportional to 260,309.43, 390,501.18 and 80,410.14

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Solution

The fourth proportional to 260,309.43, 390,501.18 and 80,410.14 is: 120,626.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,309.43 : 390,501.18 = 80,410.14 : x
  2. Step 2: Convert to fraction form
    260,309.43/390,501.18 = 80,410.14/x
  3. Step 3: Cross multiply
    260,309.43x = 390,501.18 × 80,410.14
  4. Step 4: Simplify right side
    260,309.43x = 31,400,254,553.97
  5. Step 5: Solve for x
    x = 31,400,254,553.97/260,309.43
  6. Step 6: Final answer
    x = 120,626.65

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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.