Home / 230,378.41-317,940.69-128,436.87

Finding the Fourth Proportional to 230,378.41, 317,940.69 and 128,436.87

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Solution

The fourth proportional to 230,378.41, 317,940.69 and 128,436.87 is: 177,253.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,378.41 : 317,940.69 = 128,436.87 : x
  2. Step 2: Convert to fraction form
    230,378.41/317,940.69 = 128,436.87/x
  3. Step 3: Cross multiply
    230,378.41x = 317,940.69 × 128,436.87
  4. Step 4: Simplify right side
    230,378.41x = 40,835,307,069.24
  5. Step 5: Solve for x
    x = 40,835,307,069.24/230,378.41
  6. Step 6: Final answer
    x = 177,253.19

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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.