Home / 280,100.64-386,537.10-159,241.96

Finding the Fourth Proportional to 280,100.64, 386,537.10 and 159,241.96

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Solution

The fourth proportional to 280,100.64, 386,537.10 and 159,241.96 is: 219,752.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,100.64 : 386,537.10 = 159,241.96 : x
  2. Step 2: Convert to fraction form
    280,100.64/386,537.10 = 159,241.96/x
  3. Step 3: Cross multiply
    280,100.64x = 386,537.10 × 159,241.96
  4. Step 4: Simplify right side
    280,100.64x = 61,552,925,416.72
  5. Step 5: Solve for x
    x = 61,552,925,416.72/280,100.64
  6. Step 6: Final answer
    x = 219,752.89

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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.