Home / 409,003.90-613,538.65-142,758.52

Finding the Fourth Proportional to 409,003.90, 613,538.65 and 142,758.52

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Solution

The fourth proportional to 409,003.90, 613,538.65 and 142,758.52 is: 214,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,003.90 : 613,538.65 = 142,758.52 : x
  2. Step 2: Convert to fraction form
    409,003.90/613,538.65 = 142,758.52/x
  3. Step 3: Cross multiply
    409,003.90x = 613,538.65 × 142,758.52
  4. Step 4: Simplify right side
    409,003.90x = 87,587,866,569.10
  5. Step 5: Solve for x
    x = 87,587,866,569.10/409,003.90
  6. Step 6: Final answer
    x = 214,149.22

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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.