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Finding the Fourth Proportional to 229,638.72, 344,616.96 and 89,398.08

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Solution

The fourth proportional to 229,638.72, 344,616.96 and 89,398.08 is: 134,158.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,638.72 : 344,616.96 = 89,398.08 : x
  2. Step 2: Convert to fraction form
    229,638.72/344,616.96 = 89,398.08/x
  3. Step 3: Cross multiply
    229,638.72x = 344,616.96 × 89,398.08
  4. Step 4: Simplify right side
    229,638.72x = 30,808,094,559.44
  5. Step 5: Solve for x
    x = 30,808,094,559.44/229,638.72
  6. Step 6: Final answer
    x = 134,158.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.