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Finding the Fourth Proportional to 408,929.40, 613,394.10 and 113,441.40

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Solution

The fourth proportional to 408,929.40, 613,394.10 and 113,441.40 is: 170,162.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,929.40 : 613,394.10 = 113,441.40 : x
  2. Step 2: Convert to fraction form
    408,929.40/613,394.10 = 113,441.40/x
  3. Step 3: Cross multiply
    408,929.40x = 613,394.10 × 113,441.40
  4. Step 4: Simplify right side
    408,929.40x = 69,584,285,455.74
  5. Step 5: Solve for x
    x = 69,584,285,455.74/408,929.40
  6. Step 6: Final answer
    x = 170,162.10

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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.