Home / 278,837.78-384,798.57-151,513.38

Finding the Fourth Proportional to 278,837.78, 384,798.57 and 151,513.38

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Solution

The fourth proportional to 278,837.78, 384,798.57 and 151,513.38 is: 209,089.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,837.78 : 384,798.57 = 151,513.38 : x
  2. Step 2: Convert to fraction form
    278,837.78/384,798.57 = 151,513.38/x
  3. Step 3: Cross multiply
    278,837.78x = 384,798.57 × 151,513.38
  4. Step 4: Simplify right side
    278,837.78x = 58,302,131,959.87
  5. Step 5: Solve for x
    x = 58,302,131,959.87/278,837.78
  6. Step 6: Final answer
    x = 209,089.79

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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.