Home / 386,789.64-579,785.32-162,280.44

Finding the Fourth Proportional to 386,789.64, 579,785.32 and 162,280.44

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Solution

The fourth proportional to 386,789.64, 579,785.32 and 162,280.44 is: 243,253.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,789.64 : 579,785.32 = 162,280.44 : x
  2. Step 2: Convert to fraction form
    386,789.64/579,785.32 = 162,280.44/x
  3. Step 3: Cross multiply
    386,789.64x = 579,785.32 × 162,280.44
  4. Step 4: Simplify right side
    386,789.64x = 94,087,816,835.14
  5. Step 5: Solve for x
    x = 94,087,816,835.14/386,789.64
  6. Step 6: Final answer
    x = 243,253.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.