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Finding the Fourth Proportional to 307,638.32, 424,540.96 and 169,817.33

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Solution

The fourth proportional to 307,638.32, 424,540.96 and 169,817.33 is: 234,347.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,638.32 : 424,540.96 = 169,817.33 : x
  2. Step 2: Convert to fraction form
    307,638.32/424,540.96 = 169,817.33/x
  3. Step 3: Cross multiply
    307,638.32x = 424,540.96 × 169,817.33
  4. Step 4: Simplify right side
    307,638.32x = 72,094,412,402.34
  5. Step 5: Solve for x
    x = 72,094,412,402.34/307,638.32
  6. Step 6: Final answer
    x = 234,347.96

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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.