Home / 315,929.57-435,982.77-172,690.18

Finding the Fourth Proportional to 315,929.57, 435,982.77 and 172,690.18

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Solution

The fourth proportional to 315,929.57, 435,982.77 and 172,690.18 is: 238,312.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,929.57 : 435,982.77 = 172,690.18 : x
  2. Step 2: Convert to fraction form
    315,929.57/435,982.77 = 172,690.18/x
  3. Step 3: Cross multiply
    315,929.57x = 435,982.77 × 172,690.18
  4. Step 4: Simplify right side
    315,929.57x = 75,289,941,938.24
  5. Step 5: Solve for x
    x = 75,289,941,938.24/315,929.57
  6. Step 6: Final answer
    x = 238,312.43

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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.