Home / 315,822.18-435,832.07-172,579.62

Finding the Fourth Proportional to 315,822.18, 435,832.07 and 172,579.62

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Solution

The fourth proportional to 315,822.18, 435,832.07 and 172,579.62 is: 238,158.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,822.18 : 435,832.07 = 172,579.62 : x
  2. Step 2: Convert to fraction form
    315,822.18/435,832.07 = 172,579.62/x
  3. Step 3: Cross multiply
    315,822.18x = 435,832.07 × 172,579.62
  4. Step 4: Simplify right side
    315,822.18x = 75,215,732,161.52
  5. Step 5: Solve for x
    x = 75,215,732,161.52/315,822.18
  6. Step 6: Final answer
    x = 238,158.49

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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.