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Finding the Fourth Proportional to 445,843.10, 668,845.65 and 146,240.30

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Solution

The fourth proportional to 445,843.10, 668,845.65 and 146,240.30 is: 219,387.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,843.10 : 668,845.65 = 146,240.30 : x
  2. Step 2: Convert to fraction form
    445,843.10/668,845.65 = 146,240.30/x
  3. Step 3: Cross multiply
    445,843.10x = 668,845.65 × 146,240.30
  4. Step 4: Simplify right side
    445,843.10x = 97,812,188,509.70
  5. Step 5: Solve for x
    x = 97,812,188,509.70/445,843.10
  6. Step 6: Final answer
    x = 219,387.02

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1.5x scale

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.