Home / 278,971.90-384,982.47-151,647.19

Finding the Fourth Proportional to 278,971.90, 384,982.47 and 151,647.19

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Solution

The fourth proportional to 278,971.90, 384,982.47 and 151,647.19 is: 209,273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,971.90 : 384,982.47 = 151,647.19 : x
  2. Step 2: Convert to fraction form
    278,971.90/384,982.47 = 151,647.19/x
  3. Step 3: Cross multiply
    278,971.90x = 384,982.47 × 151,647.19
  4. Step 4: Simplify right side
    278,971.90x = 58,381,508,812.30
  5. Step 5: Solve for x
    x = 58,381,508,812.30/278,971.90
  6. Step 6: Final answer
    x = 209,273.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.