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Finding the Fourth Proportional to 602,992.80, 905,007.60 and 266,551.20

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Solution

The fourth proportional to 602,992.80, 905,007.60 and 266,551.20 is: 400,055.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,992.80 : 905,007.60 = 266,551.20 : x
  2. Step 2: Convert to fraction form
    602,992.80/905,007.60 = 266,551.20/x
  3. Step 3: Cross multiply
    602,992.80x = 905,007.60 × 266,551.20
  4. Step 4: Simplify right side
    602,992.80x = 241,230,861,789.12
  5. Step 5: Solve for x
    x = 241,230,861,789.12/602,992.80
  6. Step 6: Final answer
    x = 400,055.96

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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.