Home / 286,516.54-429,626.49-128,609.02

Finding the Fourth Proportional to 286,516.54, 429,626.49 and 128,609.02

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Solution

The fourth proportional to 286,516.54, 429,626.49 and 128,609.02 is: 192,846.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,516.54 : 429,626.49 = 128,609.02 : x
  2. Step 2: Convert to fraction form
    286,516.54/429,626.49 = 128,609.02/x
  3. Step 3: Cross multiply
    286,516.54x = 429,626.49 × 128,609.02
  4. Step 4: Simplify right side
    286,516.54x = 55,253,841,844.94
  5. Step 5: Solve for x
    x = 55,253,841,844.94/286,516.54
  6. Step 6: Final answer
    x = 192,846.95

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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.