Home / 384,723.78-530,873.01-212,631.18

Finding the Fourth Proportional to 384,723.78, 530,873.01 and 212,631.18

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Solution

The fourth proportional to 384,723.78, 530,873.01 and 212,631.18 is: 293,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,723.78 : 530,873.01 = 212,631.18 : x
  2. Step 2: Convert to fraction form
    384,723.78/530,873.01 = 212,631.18/x
  3. Step 3: Cross multiply
    384,723.78x = 530,873.01 × 212,631.18
  4. Step 4: Simplify right side
    384,723.78x = 112,880,154,546.45
  5. Step 5: Solve for x
    x = 112,880,154,546.45/384,723.78
  6. Step 6: Final answer
    x = 293,405.71

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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.