Home / 230,619.28-318,242.46-128,655.40

Finding the Fourth Proportional to 230,619.28, 318,242.46 and 128,655.40

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Solution

The fourth proportional to 230,619.28, 318,242.46 and 128,655.40 is: 177,537.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,619.28 : 318,242.46 = 128,655.40 : x
  2. Step 2: Convert to fraction form
    230,619.28/318,242.46 = 128,655.40/x
  3. Step 3: Cross multiply
    230,619.28x = 318,242.46 × 128,655.40
  4. Step 4: Simplify right side
    230,619.28x = 40,943,610,988.28
  5. Step 5: Solve for x
    x = 40,943,610,988.28/230,619.28
  6. Step 6: Final answer
    x = 177,537.68

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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.