Home / 458,028.72-686,842.61-187,971.66

Finding the Fourth Proportional to 458,028.72, 686,842.61 and 187,971.66

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Solution

The fourth proportional to 458,028.72, 686,842.61 and 187,971.66 is: 281,875.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,028.72 : 686,842.61 = 187,971.66 : x
  2. Step 2: Convert to fraction form
    458,028.72/686,842.61 = 187,971.66/x
  3. Step 3: Cross multiply
    458,028.72x = 686,842.61 × 187,971.66
  4. Step 4: Simplify right side
    458,028.72x = 129,106,944,620.57
  5. Step 5: Solve for x
    x = 129,106,944,620.57/458,028.72
  6. Step 6: Final answer
    x = 281,875.22

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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.