Home / 429,918.12-645,136.38-149,632.20

Finding the Fourth Proportional to 429,918.12, 645,136.38 and 149,632.20

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Solution

The fourth proportional to 429,918.12, 645,136.38 and 149,632.20 is: 224,538.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,918.12 : 645,136.38 = 149,632.20 : x
  2. Step 2: Convert to fraction form
    429,918.12/645,136.38 = 149,632.20/x
  3. Step 3: Cross multiply
    429,918.12x = 645,136.38 × 149,632.20
  4. Step 4: Simplify right side
    429,918.12x = 96,533,175,839.44
  5. Step 5: Solve for x
    x = 96,533,175,839.44/429,918.12
  6. Step 6: Final answer
    x = 224,538.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.