Home / 278,734.95-384,664.79-156,229.58

Finding the Fourth Proportional to 278,734.95, 384,664.79 and 156,229.58

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Solution

The fourth proportional to 278,734.95, 384,664.79 and 156,229.58 is: 215,602.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,734.95 : 384,664.79 = 156,229.58 : x
  2. Step 2: Convert to fraction form
    278,734.95/384,664.79 = 156,229.58/x
  3. Step 3: Cross multiply
    278,734.95x = 384,664.79 × 156,229.58
  4. Step 4: Simplify right side
    278,734.95x = 60,096,018,460.59
  5. Step 5: Solve for x
    x = 60,096,018,460.59/278,734.95
  6. Step 6: Final answer
    x = 215,602.73

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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.