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Finding the Fourth Proportional to 278,394.63, 384,191.52 and 151,069.92

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Solution

The fourth proportional to 278,394.63, 384,191.52 and 151,069.92 is: 208,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,394.63 : 384,191.52 = 151,069.92 : x
  2. Step 2: Convert to fraction form
    278,394.63/384,191.52 = 151,069.92/x
  3. Step 3: Cross multiply
    278,394.63x = 384,191.52 × 151,069.92
  4. Step 4: Simplify right side
    278,394.63x = 58,039,782,191.08
  5. Step 5: Solve for x
    x = 58,039,782,191.08/278,394.63
  6. Step 6: Final answer
    x = 208,480.25

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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.