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Finding the Fourth Proportional to 449,074.30, 619,722.15 and 247,869.82

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Solution

The fourth proportional to 449,074.30, 619,722.15 and 247,869.82 is: 342,060.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,074.30 : 619,722.15 = 247,869.82 : x
  2. Step 2: Convert to fraction form
    449,074.30/619,722.15 = 247,869.82/x
  3. Step 3: Cross multiply
    449,074.30x = 619,722.15 × 247,869.82
  4. Step 4: Simplify right side
    449,074.30x = 153,610,417,770.51
  5. Step 5: Solve for x
    x = 153,610,417,770.51/449,074.30
  6. Step 6: Final answer
    x = 342,060.14

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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.