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Finding the Fourth Proportional to 278,295.42, 384,047.49 and 150,971.04

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Solution

The fourth proportional to 278,295.42, 384,047.49 and 150,971.04 is: 208,339.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,295.42 : 384,047.49 = 150,971.04 : x
  2. Step 2: Convert to fraction form
    278,295.42/384,047.49 = 150,971.04/x
  3. Step 3: Cross multiply
    278,295.42x = 384,047.49 × 150,971.04
  4. Step 4: Simplify right side
    278,295.42x = 57,980,048,974.69
  5. Step 5: Solve for x
    x = 57,980,048,974.69/278,295.42
  6. Step 6: Final answer
    x = 208,339.93

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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.