Home / 230,532.40-318,136.09-128,564.30

Finding the Fourth Proportional to 230,532.40, 318,136.09 and 128,564.30

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Solution

The fourth proportional to 230,532.40, 318,136.09 and 128,564.30 is: 177,419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,532.40 : 318,136.09 = 128,564.30 : x
  2. Step 2: Convert to fraction form
    230,532.40/318,136.09 = 128,564.30/x
  3. Step 3: Cross multiply
    230,532.40x = 318,136.09 × 128,564.30
  4. Step 4: Simplify right side
    230,532.40x = 40,900,943,876.29
  5. Step 5: Solve for x
    x = 40,900,943,876.29/230,532.40
  6. Step 6: Final answer
    x = 177,419.51

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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.