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Finding the Fourth Proportional to 911,326.88, 1,366,990.80 and 237,406.40

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Solution

The fourth proportional to 911,326.88, 1,366,990.80 and 237,406.40 is: 356,109.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,326.88 : 1,366,990.80 = 237,406.40 : x
  2. Step 2: Convert to fraction form
    911,326.88/1,366,990.80 = 237,406.40/x
  3. Step 3: Cross multiply
    911,326.88x = 1,366,990.80 × 237,406.40
  4. Step 4: Simplify right side
    911,326.88x = 324,532,364,661.12
  5. Step 5: Solve for x
    x = 324,532,364,661.12/911,326.88
  6. Step 6: Final answer
    x = 356,109.73

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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.