Home / 384,711.15-530,884.89-212,620.23

Finding the Fourth Proportional to 384,711.15, 530,884.89 and 212,620.23

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Solution

The fourth proportional to 384,711.15, 530,884.89 and 212,620.23 is: 293,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,711.15 : 530,884.89 = 212,620.23 : x
  2. Step 2: Convert to fraction form
    384,711.15/530,884.89 = 212,620.23/x
  3. Step 3: Cross multiply
    384,711.15x = 530,884.89 × 212,620.23
  4. Step 4: Simplify right side
    384,711.15x = 112,876,867,415.33
  5. Step 5: Solve for x
    x = 112,876,867,415.33/384,711.15
  6. Step 6: Final answer
    x = 293,406.80

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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.