Home / 286,445.28-429,678.72-108,919.20

Finding the Fourth Proportional to 286,445.28, 429,678.72 and 108,919.20

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Solution

The fourth proportional to 286,445.28, 429,678.72 and 108,919.20 is: 163,382.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,445.28 : 429,678.72 = 108,919.20 : x
  2. Step 2: Convert to fraction form
    286,445.28/429,678.72 = 108,919.20/x
  3. Step 3: Cross multiply
    286,445.28x = 429,678.72 × 108,919.20
  4. Step 4: Simplify right side
    286,445.28x = 46,800,262,439.42
  5. Step 5: Solve for x
    x = 46,800,262,439.42/286,445.28
  6. Step 6: Final answer
    x = 163,382.91

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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.