Home / 279,659.49-385,916.81-158,784.91

Finding the Fourth Proportional to 279,659.49, 385,916.81 and 158,784.91

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Solution

The fourth proportional to 279,659.49, 385,916.81 and 158,784.91 is: 219,115.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,659.49 : 385,916.81 = 158,784.91 : x
  2. Step 2: Convert to fraction form
    279,659.49/385,916.81 = 158,784.91/x
  3. Step 3: Cross multiply
    279,659.49x = 385,916.81 × 158,784.91
  4. Step 4: Simplify right side
    279,659.49x = 61,277,764,184.62
  5. Step 5: Solve for x
    x = 61,277,764,184.62/279,659.49
  6. Step 6: Final answer
    x = 219,115.63

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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.