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Finding the Fourth Proportional to 280,458.58, 387,037.83 and 159,587.14

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Solution

The fourth proportional to 280,458.58, 387,037.83 and 159,587.14 is: 220,233.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,458.58 : 387,037.83 = 159,587.14 : x
  2. Step 2: Convert to fraction form
    280,458.58/387,037.83 = 159,587.14/x
  3. Step 3: Cross multiply
    280,458.58x = 387,037.83 × 159,587.14
  4. Step 4: Simplify right side
    280,458.58x = 61,766,260,361.51
  5. Step 5: Solve for x
    x = 61,766,260,361.51/280,458.58
  6. Step 6: Final answer
    x = 220,233.09

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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.