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Finding the Fourth Proportional to 445,392.27, 668,190.47 and 145,889.91

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Solution

The fourth proportional to 445,392.27, 668,190.47 and 145,889.91 is: 218,868.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,392.27 : 668,190.47 = 145,889.91 : x
  2. Step 2: Convert to fraction form
    445,392.27/668,190.47 = 145,889.91/x
  3. Step 3: Cross multiply
    445,392.27x = 668,190.47 × 145,889.91
  4. Step 4: Simplify right side
    445,392.27x = 97,482,246,801.71
  5. Step 5: Solve for x
    x = 97,482,246,801.71/445,392.27
  6. Step 6: Final answer
    x = 218,868.30

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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.