Home / 213,829.57-320,744.09-98,412.47

Finding the Fourth Proportional to 213,829.57, 320,744.09 and 98,412.47

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Solution

The fourth proportional to 213,829.57, 320,744.09 and 98,412.47 is: 147,618.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,829.57 : 320,744.09 = 98,412.47 : x
  2. Step 2: Convert to fraction form
    213,829.57/320,744.09 = 98,412.47/x
  3. Step 3: Cross multiply
    213,829.57x = 320,744.09 × 98,412.47
  4. Step 4: Simplify right side
    213,829.57x = 31,565,217,979.90
  5. Step 5: Solve for x
    x = 31,565,217,979.90/213,829.57
  6. Step 6: Final answer
    x = 147,618.58

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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.