Home / 384,163.20-530,153.68-212,080.64

Finding the Fourth Proportional to 384,163.20, 530,153.68 and 212,080.64

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Solution

The fourth proportional to 384,163.20, 530,153.68 and 212,080.64 is: 292,675.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,163.20 : 530,153.68 = 212,080.64 : x
  2. Step 2: Convert to fraction form
    384,163.20/530,153.68 = 212,080.64/x
  3. Step 3: Cross multiply
    384,163.20x = 530,153.68 × 212,080.64
  4. Step 4: Simplify right side
    384,163.20x = 112,435,331,752.76
  5. Step 5: Solve for x
    x = 112,435,331,752.76/384,163.20
  6. Step 6: Final answer
    x = 292,675.96

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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.