Home / 315,359.32-435,189.68-172,120.38

Finding the Fourth Proportional to 315,359.32, 435,189.68 and 172,120.38

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Solution

The fourth proportional to 315,359.32, 435,189.68 and 172,120.38 is: 237,522.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,359.32 : 435,189.68 = 172,120.38 : x
  2. Step 2: Convert to fraction form
    315,359.32/435,189.68 = 172,120.38/x
  3. Step 3: Cross multiply
    315,359.32x = 435,189.68 × 172,120.38
  4. Step 4: Simplify right side
    315,359.32x = 74,905,013,093.68
  5. Step 5: Solve for x
    x = 74,905,013,093.68/315,359.32
  6. Step 6: Final answer
    x = 237,522.75

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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.