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Finding the Fourth Proportional to 315,622.42, 435,552.20 and 172,383.04

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Solution

The fourth proportional to 315,622.42, 435,552.20 and 172,383.04 is: 237,884.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,622.42 : 435,552.20 = 172,383.04 : x
  2. Step 2: Convert to fraction form
    315,622.42/435,552.20 = 172,383.04/x
  3. Step 3: Cross multiply
    315,622.42x = 435,552.20 × 172,383.04
  4. Step 4: Simplify right side
    315,622.42x = 75,081,809,275.01
  5. Step 5: Solve for x
    x = 75,081,809,275.01/315,622.42
  6. Step 6: Final answer
    x = 237,884.91

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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.