Home / 278,850.25-384,809.47-154,667.44

Finding the Fourth Proportional to 278,850.25, 384,809.47 and 154,667.44

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Solution

The fourth proportional to 278,850.25, 384,809.47 and 154,667.44 is: 213,438.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,850.25 : 384,809.47 = 154,667.44 : x
  2. Step 2: Convert to fraction form
    278,850.25/384,809.47 = 154,667.44/x
  3. Step 3: Cross multiply
    278,850.25x = 384,809.47 × 154,667.44
  4. Step 4: Simplify right side
    278,850.25x = 59,517,495,346.34
  5. Step 5: Solve for x
    x = 59,517,495,346.34/278,850.25
  6. Step 6: Final answer
    x = 213,438.91

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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.