Home / 315,824.97-435,820.10-172,586.19

Finding the Fourth Proportional to 315,824.97, 435,820.10 and 172,586.19

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Solution

The fourth proportional to 315,824.97, 435,820.10 and 172,586.19 is: 238,158.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,824.97 : 435,820.10 = 172,586.19 : x
  2. Step 2: Convert to fraction form
    315,824.97/435,820.10 = 172,586.19/x
  3. Step 3: Cross multiply
    315,824.97x = 435,820.10 × 172,586.19
  4. Step 4: Simplify right side
    315,824.97x = 75,216,529,721.49
  5. Step 5: Solve for x
    x = 75,216,529,721.49/315,824.97
  6. Step 6: Final answer
    x = 238,158.91

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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.