Home / 278,465.75-384,272.45-151,138.61

Finding the Fourth Proportional to 278,465.75, 384,272.45 and 151,138.61

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Solution

The fourth proportional to 278,465.75, 384,272.45 and 151,138.61 is: 208,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,465.75 : 384,272.45 = 151,138.61 : x
  2. Step 2: Convert to fraction form
    278,465.75/384,272.45 = 151,138.61/x
  3. Step 3: Cross multiply
    278,465.75x = 384,272.45 × 151,138.61
  4. Step 4: Simplify right side
    278,465.75x = 58,078,404,135.19
  5. Step 5: Solve for x
    x = 58,078,404,135.19/278,465.75
  6. Step 6: Final answer
    x = 208,565.70

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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.