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Finding the Fourth Proportional to 404,645.75, 606,997.80 and 155,327.75

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Solution

The fourth proportional to 404,645.75, 606,997.80 and 155,327.75 is: 233,002.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,645.75 : 606,997.80 = 155,327.75 : x
  2. Step 2: Convert to fraction form
    404,645.75/606,997.80 = 155,327.75/x
  3. Step 3: Cross multiply
    404,645.75x = 606,997.80 × 155,327.75
  4. Step 4: Simplify right side
    404,645.75x = 94,283,602,528.95
  5. Step 5: Solve for x
    x = 94,283,602,528.95/404,645.75
  6. Step 6: Final answer
    x = 233,002.82

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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.