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Finding the Fourth Proportional to 192,700.40, 288,978.71 and 66,304.89

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Solution

The fourth proportional to 192,700.40, 288,978.71 and 66,304.89 is: 99,432.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,700.40 : 288,978.71 = 66,304.89 : x
  2. Step 2: Convert to fraction form
    192,700.40/288,978.71 = 66,304.89/x
  3. Step 3: Cross multiply
    192,700.40x = 288,978.71 × 66,304.89
  4. Step 4: Simplify right side
    192,700.40x = 19,160,701,247.37
  5. Step 5: Solve for x
    x = 19,160,701,247.37/192,700.40
  6. Step 6: Final answer
    x = 99,432.60

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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.