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Finding the Fourth Proportional to 666,156.60, 998,889.30 and 245,215.80

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Solution

The fourth proportional to 666,156.60, 998,889.30 and 245,215.80 is: 367,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,156.60 : 998,889.30 = 245,215.80 : x
  2. Step 2: Convert to fraction form
    666,156.60/998,889.30 = 245,215.80/x
  3. Step 3: Cross multiply
    666,156.60x = 998,889.30 × 245,215.80
  4. Step 4: Simplify right side
    666,156.60x = 244,943,438,810.94
  5. Step 5: Solve for x
    x = 244,943,438,810.94/666,156.60
  6. Step 6: Final answer
    x = 367,696.48

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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.