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Finding the Fourth Proportional to 438,993.64, 605,810.66 and 237,790.44

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Solution

The fourth proportional to 438,993.64, 605,810.66 and 237,790.44 is: 328,150.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,993.64 : 605,810.66 = 237,790.44 : x
  2. Step 2: Convert to fraction form
    438,993.64/605,810.66 = 237,790.44/x
  3. Step 3: Cross multiply
    438,993.64x = 605,810.66 × 237,790.44
  4. Step 4: Simplify right side
    438,993.64x = 144,055,983,398.09
  5. Step 5: Solve for x
    x = 144,055,983,398.09/438,993.64
  6. Step 6: Final answer
    x = 328,150.50

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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.