Home / 278,725.08-384,640.30-151,399.78

Finding the Fourth Proportional to 278,725.08, 384,640.30 and 151,399.78

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Solution

The fourth proportional to 278,725.08, 384,640.30 and 151,399.78 is: 208,931.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,725.08 : 384,640.30 = 151,399.78 : x
  2. Step 2: Convert to fraction form
    278,725.08/384,640.30 = 151,399.78/x
  3. Step 3: Cross multiply
    278,725.08x = 384,640.30 × 151,399.78
  4. Step 4: Simplify right side
    278,725.08x = 58,234,456,799.13
  5. Step 5: Solve for x
    x = 58,234,456,799.13/278,725.08
  6. Step 6: Final answer
    x = 208,931.53

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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.