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Finding the Fourth Proportional to 278,804.76, 384,756.26 and 151,488.56

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Solution

The fourth proportional to 278,804.76, 384,756.26 and 151,488.56 is: 209,057.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,804.76 : 384,756.26 = 151,488.56 : x
  2. Step 2: Convert to fraction form
    278,804.76/384,756.26 = 151,488.56/x
  3. Step 3: Cross multiply
    278,804.76x = 384,756.26 × 151,488.56
  4. Step 4: Simplify right side
    278,804.76x = 58,286,169,097.16
  5. Step 5: Solve for x
    x = 58,286,169,097.16/278,804.76
  6. Step 6: Final answer
    x = 209,057.30

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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.