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Finding the Fourth Proportional to 471,359.76, 707,109.99 and 218,665.79

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Solution

The fourth proportional to 471,359.76, 707,109.99 and 218,665.79 is: 328,031.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,359.76 : 707,109.99 = 218,665.79 : x
  2. Step 2: Convert to fraction form
    471,359.76/707,109.99 = 218,665.79/x
  3. Step 3: Cross multiply
    471,359.76x = 707,109.99 × 218,665.79
  4. Step 4: Simplify right side
    471,359.76x = 154,620,767,030.57
  5. Step 5: Solve for x
    x = 154,620,767,030.57/471,359.76
  6. Step 6: Final answer
    x = 328,031.33

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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.