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Finding the Fourth Proportional to 415,872.40, 623,802.84 and 100,326.64

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Solution

The fourth proportional to 415,872.40, 623,802.84 and 100,326.64 is: 150,488.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,872.40 : 623,802.84 = 100,326.64 : x
  2. Step 2: Convert to fraction form
    415,872.40/623,802.84 = 100,326.64/x
  3. Step 3: Cross multiply
    415,872.40x = 623,802.84 × 100,326.64
  4. Step 4: Simplify right side
    415,872.40x = 62,584,042,959.66
  5. Step 5: Solve for x
    x = 62,584,042,959.66/415,872.40
  6. Step 6: Final answer
    x = 150,488.57

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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.