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Finding the Fourth Proportional to 384,816.88, 531,049.26 and 215,053.84

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Solution

The fourth proportional to 384,816.88, 531,049.26 and 215,053.84 is: 296,775.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,816.88 : 531,049.26 = 215,053.84 : x
  2. Step 2: Convert to fraction form
    384,816.88/531,049.26 = 215,053.84/x
  3. Step 3: Cross multiply
    384,816.88x = 531,049.26 × 215,053.84
  4. Step 4: Simplify right side
    384,816.88x = 114,204,182,592.16
  5. Step 5: Solve for x
    x = 114,204,182,592.16/384,816.88
  6. Step 6: Final answer
    x = 296,775.40

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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.