Home / 315,787.91-435,786.26-172,549.13

Finding the Fourth Proportional to 315,787.91, 435,786.26 and 172,549.13

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Solution

The fourth proportional to 315,787.91, 435,786.26 and 172,549.13 is: 238,117.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,787.91 : 435,786.26 = 172,549.13 : x
  2. Step 2: Convert to fraction form
    315,787.91/435,786.26 = 172,549.13/x
  3. Step 3: Cross multiply
    315,787.91x = 435,786.26 × 172,549.13
  4. Step 4: Simplify right side
    315,787.91x = 75,194,536,987.28
  5. Step 5: Solve for x
    x = 75,194,536,987.28/315,787.91
  6. Step 6: Final answer
    x = 238,117.22

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1.5x scale

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.