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Finding the Fourth Proportional to 508,602.90, 701,880.90 and 279,181.65

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Solution

The fourth proportional to 508,602.90, 701,880.90 and 279,181.65 is: 385,275.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,602.90 : 701,880.90 = 279,181.65 : x
  2. Step 2: Convert to fraction form
    508,602.90/701,880.90 = 279,181.65/x
  3. Step 3: Cross multiply
    508,602.90x = 701,880.90 × 279,181.65
  4. Step 4: Simplify right side
    508,602.90x = 195,952,267,765.49
  5. Step 5: Solve for x
    x = 195,952,267,765.49/508,602.90
  6. Step 6: Final answer
    x = 385,275.56

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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.