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Finding the Fourth Proportional to 384,245.16, 530,220.12 and 212,151.96

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Solution

The fourth proportional to 384,245.16, 530,220.12 and 212,151.96 is: 292,748.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,245.16 : 530,220.12 = 212,151.96 : x
  2. Step 2: Convert to fraction form
    384,245.16/530,220.12 = 212,151.96/x
  3. Step 3: Cross multiply
    384,245.16x = 530,220.12 × 212,151.96
  4. Step 4: Simplify right side
    384,245.16x = 112,487,237,689.44
  5. Step 5: Solve for x
    x = 112,487,237,689.44/384,245.16
  6. Step 6: Final answer
    x = 292,748.61

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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.