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Finding the Fourth Proportional to 358,986.88, 538,580.09 and 156,600.69

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Solution

The fourth proportional to 358,986.88, 538,580.09 and 156,600.69 is: 234,944.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,986.88 : 538,580.09 = 156,600.69 : x
  2. Step 2: Convert to fraction form
    358,986.88/538,580.09 = 156,600.69/x
  3. Step 3: Cross multiply
    358,986.88x = 538,580.09 × 156,600.69
  4. Step 4: Simplify right side
    358,986.88x = 84,342,013,714.26
  5. Step 5: Solve for x
    x = 84,342,013,714.26/358,986.88
  6. Step 6: Final answer
    x = 234,944.56

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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.