Home / 315,825.20-435,837.89-172,586.15

Finding the Fourth Proportional to 315,825.20, 435,837.89 and 172,586.15

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Solution

The fourth proportional to 315,825.20, 435,837.89 and 172,586.15 is: 238,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,825.20 : 435,837.89 = 172,586.15 : x
  2. Step 2: Convert to fraction form
    315,825.20/435,837.89 = 172,586.15/x
  3. Step 3: Cross multiply
    315,825.20x = 435,837.89 × 172,586.15
  4. Step 4: Simplify right side
    315,825.20x = 75,219,582,596.29
  5. Step 5: Solve for x
    x = 75,219,582,596.29/315,825.20
  6. Step 6: Final answer
    x = 238,168.40

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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.