Home / 278,845.20-384,807.51-151,520.76

Finding the Fourth Proportional to 278,845.20, 384,807.51 and 151,520.76

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Solution

The fourth proportional to 278,845.20, 384,807.51 and 151,520.76 is: 209,099.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,845.20 : 384,807.51 = 151,520.76 : x
  2. Step 2: Convert to fraction form
    278,845.20/384,807.51 = 151,520.76/x
  3. Step 3: Cross multiply
    278,845.20x = 384,807.51 × 151,520.76
  4. Step 4: Simplify right side
    278,845.20x = 58,306,326,368.91
  5. Step 5: Solve for x
    x = 58,306,326,368.91/278,845.20
  6. Step 6: Final answer
    x = 209,099.27

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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.