Home / 278,743.68-384,668.96-151,421.76

Finding the Fourth Proportional to 278,743.68, 384,668.96 and 151,421.76

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Solution

The fourth proportional to 278,743.68, 384,668.96 and 151,421.76 is: 208,963.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,743.68 : 384,668.96 = 151,421.76 : x
  2. Step 2: Convert to fraction form
    278,743.68/384,668.96 = 151,421.76/x
  3. Step 3: Cross multiply
    278,743.68x = 384,668.96 × 151,421.76
  4. Step 4: Simplify right side
    278,743.68x = 58,247,250,940.57
  5. Step 5: Solve for x
    x = 58,247,250,940.57/278,743.68
  6. Step 6: Final answer
    x = 208,963.49

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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.