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Finding the Fourth Proportional to 239,774.08, 330,838.83 and 137,779.83

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Solution

The fourth proportional to 239,774.08, 330,838.83 and 137,779.83 is: 190,107.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,774.08 : 330,838.83 = 137,779.83 : x
  2. Step 2: Convert to fraction form
    239,774.08/330,838.83 = 137,779.83/x
  3. Step 3: Cross multiply
    239,774.08x = 330,838.83 × 137,779.83
  4. Step 4: Simplify right side
    239,774.08x = 45,582,917,065.90
  5. Step 5: Solve for x
    x = 45,582,917,065.90/239,774.08
  6. Step 6: Final answer
    x = 190,107.78

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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.