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Finding the Fourth Proportional to 278,476.76, 384,287.64 and 151,149.62

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Solution

The fourth proportional to 278,476.76, 384,287.64 and 151,149.62 is: 208,580.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,476.76 : 384,287.64 = 151,149.62 : x
  2. Step 2: Convert to fraction form
    278,476.76/384,287.64 = 151,149.62/x
  3. Step 3: Cross multiply
    278,476.76x = 384,287.64 × 151,149.62
  4. Step 4: Simplify right side
    278,476.76x = 58,084,930,756.70
  5. Step 5: Solve for x
    x = 58,084,930,756.70/278,476.76
  6. Step 6: Final answer
    x = 208,580.89

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1.5x scale

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.