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Finding the Fourth Proportional to 355,854.84, 491,031.23 and 212,584.46

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Solution

The fourth proportional to 355,854.84, 491,031.23 and 212,584.46 is: 293,337.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,854.84 : 491,031.23 = 212,584.46 : x
  2. Step 2: Convert to fraction form
    355,854.84/491,031.23 = 212,584.46/x
  3. Step 3: Cross multiply
    355,854.84x = 491,031.23 × 212,584.46
  4. Step 4: Simplify right side
    355,854.84x = 104,385,608,872.69
  5. Step 5: Solve for x
    x = 104,385,608,872.69/355,854.84
  6. Step 6: Final answer
    x = 293,337.61

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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.