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Finding the Fourth Proportional to 279,356.69, 385,504.84 and 152,029.55

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Solution

The fourth proportional to 279,356.69, 385,504.84 and 152,029.55 is: 209,796.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,356.69 : 385,504.84 = 152,029.55 : x
  2. Step 2: Convert to fraction form
    279,356.69/385,504.84 = 152,029.55/x
  3. Step 3: Cross multiply
    279,356.69x = 385,504.84 × 152,029.55
  4. Step 4: Simplify right side
    279,356.69x = 58,608,127,348.02
  5. Step 5: Solve for x
    x = 58,608,127,348.02/279,356.69
  6. Step 6: Final answer
    x = 209,796.76

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1.5x scale

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.