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Finding the Fourth Proportional to 311,512.68, 429,887.24 and 168,272.68

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Solution

The fourth proportional to 311,512.68, 429,887.24 and 168,272.68 is: 232,216.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,512.68 : 429,887.24 = 168,272.68 : x
  2. Step 2: Convert to fraction form
    311,512.68/429,887.24 = 168,272.68/x
  3. Step 3: Cross multiply
    311,512.68x = 429,887.24 × 168,272.68
  4. Step 4: Simplify right side
    311,512.68x = 72,338,277,972.60
  5. Step 5: Solve for x
    x = 72,338,277,972.60/311,512.68
  6. Step 6: Final answer
    x = 232,216.16

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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.