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Finding the Fourth Proportional to 316,578, 436,888.86 and 173,339.22

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Solution

The fourth proportional to 316,578, 436,888.86 and 173,339.22 is: 239,214.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,578 : 436,888.86 = 173,339.22 : x
  2. Step 2: Convert to fraction form
    316,578/436,888.86 = 173,339.22/x
  3. Step 3: Cross multiply
    316,578x = 436,888.86 × 173,339.22
  4. Step 4: Simplify right side
    316,578x = 75,729,974,219.09
  5. Step 5: Solve for x
    x = 75,729,974,219.09/316,578
  6. Step 6: Final answer
    x = 239,214.27

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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.