Home / 286,488.06-429,584.26-128,581.39

Finding the Fourth Proportional to 286,488.06, 429,584.26 and 128,581.39

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Solution

The fourth proportional to 286,488.06, 429,584.26 and 128,581.39 is: 192,805.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,488.06 : 429,584.26 = 128,581.39 : x
  2. Step 2: Convert to fraction form
    286,488.06/429,584.26 = 128,581.39/x
  3. Step 3: Cross multiply
    286,488.06x = 429,584.26 × 128,581.39
  4. Step 4: Simplify right side
    286,488.06x = 55,236,541,272.92
  5. Step 5: Solve for x
    x = 55,236,541,272.92/286,488.06
  6. Step 6: Final answer
    x = 192,805.74

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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.