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Finding the Fourth Proportional to 445,482.45, 668,216.79 and 108,522.72

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Solution

The fourth proportional to 445,482.45, 668,216.79 and 108,522.72 is: 162,782.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,482.45 : 668,216.79 = 108,522.72 : x
  2. Step 2: Convert to fraction form
    445,482.45/668,216.79 = 108,522.72/x
  3. Step 3: Cross multiply
    445,482.45x = 668,216.79 × 108,522.72
  4. Step 4: Simplify right side
    445,482.45x = 72,516,703,600.47
  5. Step 5: Solve for x
    x = 72,516,703,600.47/445,482.45
  6. Step 6: Final answer
    x = 162,782.40

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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.