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Finding the Fourth Proportional to 306,888.66, 423,489.69 and 169,040.79

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Solution

The fourth proportional to 306,888.66, 423,489.69 and 169,040.79 is: 233,267.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,888.66 : 423,489.69 = 169,040.79 : x
  2. Step 2: Convert to fraction form
    306,888.66/423,489.69 = 169,040.79/x
  3. Step 3: Cross multiply
    306,888.66x = 423,489.69 × 169,040.79
  4. Step 4: Simplify right side
    306,888.66x = 71,587,031,754.46
  5. Step 5: Solve for x
    x = 71,587,031,754.46/306,888.66
  6. Step 6: Final answer
    x = 233,267.11

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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.