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Finding the Fourth Proportional to 278,381.76, 384,165.06 and 151,054.62

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Solution

The fourth proportional to 278,381.76, 384,165.06 and 151,054.62 is: 208,454.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,381.76 : 384,165.06 = 151,054.62 : x
  2. Step 2: Convert to fraction form
    278,381.76/384,165.06 = 151,054.62/x
  3. Step 3: Cross multiply
    278,381.76x = 384,165.06 × 151,054.62
  4. Step 4: Simplify right side
    278,381.76x = 58,029,907,155.58
  5. Step 5: Solve for x
    x = 58,029,907,155.58/278,381.76
  6. Step 6: Final answer
    x = 208,454.42

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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.