Home / 230,366.90-317,932.04-128,401.68

Finding the Fourth Proportional to 230,366.90, 317,932.04 and 128,401.68

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Solution

The fourth proportional to 230,366.90, 317,932.04 and 128,401.68 is: 177,208.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,366.90 : 317,932.04 = 128,401.68 : x
  2. Step 2: Convert to fraction form
    230,366.90/317,932.04 = 128,401.68/x
  3. Step 3: Cross multiply
    230,366.90x = 317,932.04 × 128,401.68
  4. Step 4: Simplify right side
    230,366.90x = 40,823,008,061.83
  5. Step 5: Solve for x
    x = 40,823,008,061.83/230,366.90
  6. Step 6: Final answer
    x = 177,208.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.