Home / 315,622.20-435,558-172,382.16

Finding the Fourth Proportional to 315,622.20, 435,558 and 172,382.16

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Solution

The fourth proportional to 315,622.20, 435,558 and 172,382.16 is: 237,887.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,622.20 : 435,558 = 172,382.16 : x
  2. Step 2: Convert to fraction form
    315,622.20/435,558 = 172,382.16/x
  3. Step 3: Cross multiply
    315,622.20x = 435,558 × 172,382.16
  4. Step 4: Simplify right side
    315,622.20x = 75,082,428,845.28
  5. Step 5: Solve for x
    x = 75,082,428,845.28/315,622.20
  6. Step 6: Final answer
    x = 237,887.03

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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.