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Finding the Fourth Proportional to 279,356.94, 385,505.19 and 152,029.80

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Solution

The fourth proportional to 279,356.94, 385,505.19 and 152,029.80 is: 209,797.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,356.94 : 385,505.19 = 152,029.80 : x
  2. Step 2: Convert to fraction form
    279,356.94/385,505.19 = 152,029.80/x
  3. Step 3: Cross multiply
    279,356.94x = 385,505.19 × 152,029.80
  4. Step 4: Simplify right side
    279,356.94x = 58,608,276,934.66
  5. Step 5: Solve for x
    x = 58,608,276,934.66/279,356.94
  6. Step 6: Final answer
    x = 209,797.10

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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.