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Finding the Fourth Proportional to 257,329.71, 386,072.73 and 124,185.15

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Solution

The fourth proportional to 257,329.71, 386,072.73 and 124,185.15 is: 186,315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,329.71 : 386,072.73 = 124,185.15 : x
  2. Step 2: Convert to fraction form
    257,329.71/386,072.73 = 124,185.15/x
  3. Step 3: Cross multiply
    257,329.71x = 386,072.73 × 124,185.15
  4. Step 4: Simplify right side
    257,329.71x = 47,944,499,885.96
  5. Step 5: Solve for x
    x = 47,944,499,885.96/257,329.71
  6. Step 6: Final answer
    x = 186,315.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.