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Finding the Fourth Proportional to 280,383.90, 386,924.73 and 159,522.57

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Solution

The fourth proportional to 280,383.90, 386,924.73 and 159,522.57 is: 220,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,383.90 : 386,924.73 = 159,522.57 : x
  2. Step 2: Convert to fraction form
    280,383.90/386,924.73 = 159,522.57/x
  3. Step 3: Cross multiply
    280,383.90x = 386,924.73 × 159,522.57
  4. Step 4: Simplify right side
    280,383.90x = 61,723,227,326.16
  5. Step 5: Solve for x
    x = 61,723,227,326.16/280,383.90
  6. Step 6: Final answer
    x = 220,138.27

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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.