Home / 230,314.18-317,828.78-128,339.22

Finding the Fourth Proportional to 230,314.18, 317,828.78 and 128,339.22

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Solution

The fourth proportional to 230,314.18, 317,828.78 and 128,339.22 is: 177,105.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,314.18 : 317,828.78 = 128,339.22 : x
  2. Step 2: Convert to fraction form
    230,314.18/317,828.78 = 128,339.22/x
  3. Step 3: Cross multiply
    230,314.18x = 317,828.78 × 128,339.22
  4. Step 4: Simplify right side
    230,314.18x = 40,789,897,718.75
  5. Step 5: Solve for x
    x = 40,789,897,718.75/230,314.18
  6. Step 6: Final answer
    x = 177,105.46

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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.