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Finding the Fourth Proportional to 279,113.22, 385,319.25 and 188,946.18

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Solution

The fourth proportional to 279,113.22, 385,319.25 and 188,946.18 is: 260,842.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,113.22 : 385,319.25 = 188,946.18 : x
  2. Step 2: Convert to fraction form
    279,113.22/385,319.25 = 188,946.18/x
  3. Step 3: Cross multiply
    279,113.22x = 385,319.25 × 188,946.18
  4. Step 4: Simplify right side
    279,113.22x = 72,804,600,367.97
  5. Step 5: Solve for x
    x = 72,804,600,367.97/279,113.22
  6. Step 6: Final answer
    x = 260,842.54

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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.