Home / 230,401.18-317,955.07-128,433.12

Finding the Fourth Proportional to 230,401.18, 317,955.07 and 128,433.12

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Solution

The fourth proportional to 230,401.18, 317,955.07 and 128,433.12 is: 177,238.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,401.18 : 317,955.07 = 128,433.12 : x
  2. Step 2: Convert to fraction form
    230,401.18/317,955.07 = 128,433.12/x
  3. Step 3: Cross multiply
    230,401.18x = 317,955.07 × 128,433.12
  4. Step 4: Simplify right side
    230,401.18x = 40,835,961,659.92
  5. Step 5: Solve for x
    x = 40,835,961,659.92/230,401.18
  6. Step 6: Final answer
    x = 177,238.51

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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.