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Finding the Fourth Proportional to 384,709.44, 530,882.49 and 212,618.51

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Solution

The fourth proportional to 384,709.44, 530,882.49 and 212,618.51 is: 293,404.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,709.44 : 530,882.49 = 212,618.51 : x
  2. Step 2: Convert to fraction form
    384,709.44/530,882.49 = 212,618.51/x
  3. Step 3: Cross multiply
    384,709.44x = 530,882.49 × 212,618.51
  4. Step 4: Simplify right side
    384,709.44x = 112,875,443,097.06
  5. Step 5: Solve for x
    x = 112,875,443,097.06/384,709.44
  6. Step 6: Final answer
    x = 293,404.40

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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.