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Finding the Fourth Proportional to 438,905.91, 605,690.15 and 237,701.91

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Solution

The fourth proportional to 438,905.91, 605,690.15 and 237,701.91 is: 328,028.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,905.91 : 605,690.15 = 237,701.91 : x
  2. Step 2: Convert to fraction form
    438,905.91/605,690.15 = 237,701.91/x
  3. Step 3: Cross multiply
    438,905.91x = 605,690.15 × 237,701.91
  4. Step 4: Simplify right side
    438,905.91x = 143,973,704,334.68
  5. Step 5: Solve for x
    x = 143,973,704,334.68/438,905.91
  6. Step 6: Final answer
    x = 328,028.63

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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.