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Finding the Fourth Proportional to 384,145.37, 530,106.71 and 212,059.64

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Solution

The fourth proportional to 384,145.37, 530,106.71 and 212,059.64 is: 292,634.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,145.37 : 530,106.71 = 212,059.64 : x
  2. Step 2: Convert to fraction form
    384,145.37/530,106.71 = 212,059.64/x
  3. Step 3: Cross multiply
    384,145.37x = 530,106.71 × 212,059.64
  4. Step 4: Simplify right side
    384,145.37x = 112,414,234,373.35
  5. Step 5: Solve for x
    x = 112,414,234,373.35/384,145.37
  6. Step 6: Final answer
    x = 292,634.62

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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.