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Finding the Fourth Proportional to 278,892.62, 384,871.64 and 151,568.24

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Solution

The fourth proportional to 278,892.62, 384,871.64 and 151,568.24 is: 209,164.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,892.62 : 384,871.64 = 151,568.24 : x
  2. Step 2: Convert to fraction form
    278,892.62/384,871.64 = 151,568.24/x
  3. Step 3: Cross multiply
    278,892.62x = 384,871.64 × 151,568.24
  4. Step 4: Simplify right side
    278,892.62x = 58,334,317,100.71
  5. Step 5: Solve for x
    x = 58,334,317,100.71/278,892.62
  6. Step 6: Final answer
    x = 209,164.08

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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.