Home / 278,730.92-384,629.65-151,403.78

Finding the Fourth Proportional to 278,730.92, 384,629.65 and 151,403.78

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Solution

The fourth proportional to 278,730.92, 384,629.65 and 151,403.78 is: 208,926.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,730.92 : 384,629.65 = 151,403.78 : x
  2. Step 2: Convert to fraction form
    278,730.92/384,629.65 = 151,403.78/x
  3. Step 3: Cross multiply
    278,730.92x = 384,629.65 × 151,403.78
  4. Step 4: Simplify right side
    278,730.92x = 58,234,382,910.08
  5. Step 5: Solve for x
    x = 58,234,382,910.08/278,730.92
  6. Step 6: Final answer
    x = 208,926.89

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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.