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Finding the Fourth Proportional to 386,643.74, 579,732.64 and 173,373.06

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Solution

The fourth proportional to 386,643.74, 579,732.64 and 173,373.06 is: 259,955.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,643.74 : 579,732.64 = 173,373.06 : x
  2. Step 2: Convert to fraction form
    386,643.74/579,732.64 = 173,373.06/x
  3. Step 3: Cross multiply
    386,643.74x = 579,732.64 × 173,373.06
  4. Step 4: Simplify right side
    386,643.74x = 100,510,021,778.68
  5. Step 5: Solve for x
    x = 100,510,021,778.68/386,643.74
  6. Step 6: Final answer
    x = 259,955.13

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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.