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Finding the Fourth Proportional to 311,501.43, 429,872.15 and 168,261.47

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Solution

The fourth proportional to 311,501.43, 429,872.15 and 168,261.47 is: 232,200.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,501.43 : 429,872.15 = 168,261.47 : x
  2. Step 2: Convert to fraction form
    311,501.43/429,872.15 = 168,261.47/x
  3. Step 3: Cross multiply
    311,501.43x = 429,872.15 × 168,261.47
  4. Step 4: Simplify right side
    311,501.43x = 72,330,919,871.06
  5. Step 5: Solve for x
    x = 72,330,919,871.06/311,501.43
  6. Step 6: Final answer
    x = 232,200.92

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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.