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Finding the Fourth Proportional to 306,711.45, 423,271.20 and 167,019.29

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Solution

The fourth proportional to 306,711.45, 423,271.20 and 167,019.29 is: 230,491.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,711.45 : 423,271.20 = 167,019.29 : x
  2. Step 2: Convert to fraction form
    306,711.45/423,271.20 = 167,019.29/x
  3. Step 3: Cross multiply
    306,711.45x = 423,271.20 × 167,019.29
  4. Step 4: Simplify right side
    306,711.45x = 70,694,455,301.45
  5. Step 5: Solve for x
    x = 70,694,455,301.45/306,711.45
  6. Step 6: Final answer
    x = 230,491.74

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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.