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Finding the Fourth Proportional to 422,721.05, 583,378.50 and 241,491.81

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Solution

The fourth proportional to 422,721.05, 583,378.50 and 241,491.81 is: 333,272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,721.05 : 583,378.50 = 241,491.81 : x
  2. Step 2: Convert to fraction form
    422,721.05/583,378.50 = 241,491.81/x
  3. Step 3: Cross multiply
    422,721.05x = 583,378.50 × 241,491.81
  4. Step 4: Simplify right side
    422,721.05x = 140,881,132,973.35
  5. Step 5: Solve for x
    x = 140,881,132,973.35/422,721.05
  6. Step 6: Final answer
    x = 333,272.11

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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.