Home / 225,020.53-310,517.40-128,247.04

Finding the Fourth Proportional to 225,020.53, 310,517.40 and 128,247.04

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Solution

The fourth proportional to 225,020.53, 310,517.40 and 128,247.04 is: 176,974.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,020.53 : 310,517.40 = 128,247.04 : x
  2. Step 2: Convert to fraction form
    225,020.53/310,517.40 = 128,247.04/x
  3. Step 3: Cross multiply
    225,020.53x = 310,517.40 × 128,247.04
  4. Step 4: Simplify right side
    225,020.53x = 39,822,937,418.50
  5. Step 5: Solve for x
    x = 39,822,937,418.50/225,020.53
  6. Step 6: Final answer
    x = 176,974.69

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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.