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Finding the Fourth Proportional to 438,643.44, 605,322.72 and 247,664.88

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Solution

The fourth proportional to 438,643.44, 605,322.72 and 247,664.88 is: 341,774.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,643.44 : 605,322.72 = 247,664.88 : x
  2. Step 2: Convert to fraction form
    438,643.44/605,322.72 = 247,664.88/x
  3. Step 3: Cross multiply
    438,643.44x = 605,322.72 × 247,664.88
  4. Step 4: Simplify right side
    438,643.44x = 149,917,178,810.07
  5. Step 5: Solve for x
    x = 149,917,178,810.07/438,643.44
  6. Step 6: Final answer
    x = 341,774.58

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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.