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Finding the Fourth Proportional to 279,573.60, 385,816 and 152,249.08

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Solution

The fourth proportional to 279,573.60, 385,816 and 152,249.08 is: 210,106.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,573.60 : 385,816 = 152,249.08 : x
  2. Step 2: Convert to fraction form
    279,573.60/385,816 = 152,249.08/x
  3. Step 3: Cross multiply
    279,573.60x = 385,816 × 152,249.08
  4. Step 4: Simplify right side
    279,573.60x = 58,740,131,049.28
  5. Step 5: Solve for x
    x = 58,740,131,049.28/279,573.60
  6. Step 6: Final answer
    x = 210,106.14

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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.