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Finding the Fourth Proportional to 280,087.32, 386,518.67 and 159,228.64

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Solution

The fourth proportional to 280,087.32, 386,518.67 and 159,228.64 is: 219,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,087.32 : 386,518.67 = 159,228.64 : x
  2. Step 2: Convert to fraction form
    280,087.32/386,518.67 = 159,228.64/x
  3. Step 3: Cross multiply
    280,087.32x = 386,518.67 × 159,228.64
  4. Step 4: Simplify right side
    280,087.32x = 61,544,840,226.12
  5. Step 5: Solve for x
    x = 61,544,840,226.12/280,087.32
  6. Step 6: Final answer
    x = 219,734.48

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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.