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Finding the Fourth Proportional to 448,938, 673,406.10 and 261,818.28

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Solution

The fourth proportional to 448,938, 673,406.10 and 261,818.28 is: 392,726.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,938 : 673,406.10 = 261,818.28 : x
  2. Step 2: Convert to fraction form
    448,938/673,406.10 = 261,818.28/x
  3. Step 3: Cross multiply
    448,938x = 673,406.10 × 261,818.28
  4. Step 4: Simplify right side
    448,938x = 176,310,026,843.51
  5. Step 5: Solve for x
    x = 176,310,026,843.51/448,938
  6. Step 6: Final answer
    x = 392,726.90

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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.