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Finding the Fourth Proportional to 438,900.50, 605,682.69 and 237,696.50

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Solution

The fourth proportional to 438,900.50, 605,682.69 and 237,696.50 is: 328,021.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,900.50 : 605,682.69 = 237,696.50 : x
  2. Step 2: Convert to fraction form
    438,900.50/605,682.69 = 237,696.50/x
  3. Step 3: Cross multiply
    438,900.50x = 605,682.69 × 237,696.50
  4. Step 4: Simplify right side
    438,900.50x = 143,968,655,523.59
  5. Step 5: Solve for x
    x = 143,968,655,523.59/438,900.50
  6. Step 6: Final answer
    x = 328,021.17

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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.