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Finding the Fourth Proportional to 445,706.73, 668,488.67 and 142,061.43

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Solution

The fourth proportional to 445,706.73, 668,488.67 and 142,061.43 is: 213,069.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,706.73 : 668,488.67 = 142,061.43 : x
  2. Step 2: Convert to fraction form
    445,706.73/668,488.67 = 142,061.43/x
  3. Step 3: Cross multiply
    445,706.73x = 668,488.67 × 142,061.43
  4. Step 4: Simplify right side
    445,706.73x = 94,966,455,688.69
  5. Step 5: Solve for x
    x = 94,966,455,688.69/445,706.73
  6. Step 6: Final answer
    x = 213,069.38

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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.