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Finding the Fourth Proportional to 311,502.89, 429,874.08 and 168,263.03

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Solution

The fourth proportional to 311,502.89, 429,874.08 and 168,263.03 is: 232,203.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,502.89 : 429,874.08 = 168,263.03 : x
  2. Step 2: Convert to fraction form
    311,502.89/429,874.08 = 168,263.03/x
  3. Step 3: Cross multiply
    311,502.89x = 429,874.08 × 168,263.03
  4. Step 4: Simplify right side
    311,502.89x = 72,331,915,219.26
  5. Step 5: Solve for x
    x = 72,331,915,219.26/311,502.89
  6. Step 6: Final answer
    x = 232,203.03

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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.