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Finding the Fourth Proportional to 275,799.20, 380,590.08 and 153,285.88

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Solution

The fourth proportional to 275,799.20, 380,590.08 and 153,285.88 is: 211,527.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,799.20 : 380,590.08 = 153,285.88 : x
  2. Step 2: Convert to fraction form
    275,799.20/380,590.08 = 153,285.88/x
  3. Step 3: Cross multiply
    275,799.20x = 380,590.08 × 153,285.88
  4. Step 4: Simplify right side
    275,799.20x = 58,339,085,332.07
  5. Step 5: Solve for x
    x = 58,339,085,332.07/275,799.20
  6. Step 6: Final answer
    x = 211,527.39

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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.