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Finding the Fourth Proportional to 387,842.68, 581,699.22 and 107,388.28

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Solution

The fourth proportional to 387,842.68, 581,699.22 and 107,388.28 is: 161,064.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,842.68 : 581,699.22 = 107,388.28 : x
  2. Step 2: Convert to fraction form
    387,842.68/581,699.22 = 107,388.28/x
  3. Step 3: Cross multiply
    387,842.68x = 581,699.22 × 107,388.28
  4. Step 4: Simplify right side
    387,842.68x = 62,467,678,713.14
  5. Step 5: Solve for x
    x = 62,467,678,713.14/387,842.68
  6. Step 6: Final answer
    x = 161,064.48

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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.