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Finding the Fourth Proportional to 370,287.82, 555,057.70 and 145,805.78

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Solution

The fourth proportional to 370,287.82, 555,057.70 and 145,805.78 is: 218,561.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,287.82 : 555,057.70 = 145,805.78 : x
  2. Step 2: Convert to fraction form
    370,287.82/555,057.70 = 145,805.78/x
  3. Step 3: Cross multiply
    370,287.82x = 555,057.70 × 145,805.78
  4. Step 4: Simplify right side
    370,287.82x = 80,930,620,893.51
  5. Step 5: Solve for x
    x = 80,930,620,893.51/370,287.82
  6. Step 6: Final answer
    x = 218,561.39

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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.