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Finding the Fourth Proportional to 442,078.32, 663,122 and 353,892.40

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Solution

The fourth proportional to 442,078.32, 663,122 and 353,892.40 is: 530,842.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,078.32 : 663,122 = 353,892.40 : x
  2. Step 2: Convert to fraction form
    442,078.32/663,122 = 353,892.40/x
  3. Step 3: Cross multiply
    442,078.32x = 663,122 × 353,892.40
  4. Step 4: Simplify right side
    442,078.32x = 234,673,836,072.80
  5. Step 5: Solve for x
    x = 234,673,836,072.80/442,078.32
  6. Step 6: Final answer
    x = 530,842.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.