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Finding the Fourth Proportional to 311,512.50, 429,887.48 and 168,272.54

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Solution

The fourth proportional to 311,512.50, 429,887.48 and 168,272.54 is: 232,216.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,512.50 : 429,887.48 = 168,272.54 : x
  2. Step 2: Convert to fraction form
    311,512.50/429,887.48 = 168,272.54/x
  3. Step 3: Cross multiply
    311,512.50x = 429,887.48 × 168,272.54
  4. Step 4: Simplify right side
    311,512.50x = 72,338,258,714.04
  5. Step 5: Solve for x
    x = 72,338,258,714.04/311,512.50
  6. Step 6: Final answer
    x = 232,216.23

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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.