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Finding the Fourth Proportional to 280,146.61, 386,620.59 and 159,299.14

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Solution

The fourth proportional to 280,146.61, 386,620.59 and 159,299.14 is: 219,843.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,146.61 : 386,620.59 = 159,299.14 : x
  2. Step 2: Convert to fraction form
    280,146.61/386,620.59 = 159,299.14/x
  3. Step 3: Cross multiply
    280,146.61x = 386,620.59 × 159,299.14
  4. Step 4: Simplify right side
    280,146.61x = 61,588,329,480.08
  5. Step 5: Solve for x
    x = 61,588,329,480.08/280,146.61
  6. Step 6: Final answer
    x = 219,843.21

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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.