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Finding the Fourth Proportional to 257,501.31, 355,315.86 and 149,988.39

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Solution

The fourth proportional to 257,501.31, 355,315.86 and 149,988.39 is: 206,963.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,501.31 : 355,315.86 = 149,988.39 : x
  2. Step 2: Convert to fraction form
    257,501.31/355,315.86 = 149,988.39/x
  3. Step 3: Cross multiply
    257,501.31x = 355,315.86 × 149,988.39
  4. Step 4: Simplify right side
    257,501.31x = 53,293,253,782.87
  5. Step 5: Solve for x
    x = 53,293,253,782.87/257,501.31
  6. Step 6: Final answer
    x = 206,963.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.