Home / 286,538.24-429,810.60-86,857.04

Finding the Fourth Proportional to 286,538.24, 429,810.60 and 86,857.04

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Solution

The fourth proportional to 286,538.24, 429,810.60 and 86,857.04 is: 130,286.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,538.24 : 429,810.60 = 86,857.04 : x
  2. Step 2: Convert to fraction form
    286,538.24/429,810.60 = 86,857.04/x
  3. Step 3: Cross multiply
    286,538.24x = 429,810.60 × 86,857.04
  4. Step 4: Simplify right side
    286,538.24x = 37,332,076,476.62
  5. Step 5: Solve for x
    x = 37,332,076,476.62/286,538.24
  6. Step 6: Final answer
    x = 130,286.54

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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.