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Finding the Fourth Proportional to 272,558.65, 408,805.77 and 72,894.51

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Solution

The fourth proportional to 272,558.65, 408,805.77 and 72,894.51 is: 109,333.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,558.65 : 408,805.77 = 72,894.51 : x
  2. Step 2: Convert to fraction form
    272,558.65/408,805.77 = 72,894.51/x
  3. Step 3: Cross multiply
    272,558.65x = 408,805.77 × 72,894.51
  4. Step 4: Simplify right side
    272,558.65x = 29,799,696,289.32
  5. Step 5: Solve for x
    x = 29,799,696,289.32/272,558.65
  6. Step 6: Final answer
    x = 109,333.15

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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.