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Finding the Fourth Proportional to 384,144.05, 530,104.90 and 212,058.32

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Solution

The fourth proportional to 384,144.05, 530,104.90 and 212,058.32 is: 292,632.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,144.05 : 530,104.90 = 212,058.32 : x
  2. Step 2: Convert to fraction form
    384,144.05/530,104.90 = 212,058.32/x
  3. Step 3: Cross multiply
    384,144.05x = 530,104.90 × 212,058.32
  4. Step 4: Simplify right side
    384,144.05x = 112,413,154,517.77
  5. Step 5: Solve for x
    x = 112,413,154,517.77/384,144.05
  6. Step 6: Final answer
    x = 292,632.81

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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.