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Finding the Fourth Proportional to 384,627.56, 530,818.01 and 212,579.13

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Solution

The fourth proportional to 384,627.56, 530,818.01 and 212,579.13 is: 293,376.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,627.56 : 530,818.01 = 212,579.13 : x
  2. Step 2: Convert to fraction form
    384,627.56/530,818.01 = 212,579.13/x
  3. Step 3: Cross multiply
    384,627.56x = 530,818.01 × 212,579.13
  4. Step 4: Simplify right side
    384,627.56x = 112,840,832,478.98
  5. Step 5: Solve for x
    x = 112,840,832,478.98/384,627.56
  6. Step 6: Final answer
    x = 293,376.88

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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.