Home / 315,789.12-435,792.06-172,549.16

Finding the Fourth Proportional to 315,789.12, 435,792.06 and 172,549.16

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Solution

The fourth proportional to 315,789.12, 435,792.06 and 172,549.16 is: 238,119.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,789.12 : 435,792.06 = 172,549.16 : x
  2. Step 2: Convert to fraction form
    315,789.12/435,792.06 = 172,549.16/x
  3. Step 3: Cross multiply
    315,789.12x = 435,792.06 × 172,549.16
  4. Step 4: Simplify right side
    315,789.12x = 75,195,553,887.67
  5. Step 5: Solve for x
    x = 75,195,553,887.67/315,789.12
  6. Step 6: Final answer
    x = 238,119.52

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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.