Home / 278,807.66-384,758.07-151,485.38

Finding the Fourth Proportional to 278,807.66, 384,758.07 and 151,485.38

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Solution

The fourth proportional to 278,807.66, 384,758.07 and 151,485.38 is: 209,051.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,807.66 : 384,758.07 = 151,485.38 : x
  2. Step 2: Convert to fraction form
    278,807.66/384,758.07 = 151,485.38/x
  3. Step 3: Cross multiply
    278,807.66x = 384,758.07 × 151,485.38
  4. Step 4: Simplify right side
    278,807.66x = 58,285,222,442.02
  5. Step 5: Solve for x
    x = 58,285,222,442.02/278,807.66
  6. Step 6: Final answer
    x = 209,051.73

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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.