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Finding the Fourth Proportional to 272,245.04, 408,387 and 72,564.38

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Solution

The fourth proportional to 272,245.04, 408,387 and 72,564.38 is: 108,851.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,245.04 : 408,387 = 72,564.38 : x
  2. Step 2: Convert to fraction form
    272,245.04/408,387 = 72,564.38/x
  3. Step 3: Cross multiply
    272,245.04x = 408,387 × 72,564.38
  4. Step 4: Simplify right side
    272,245.04x = 29,634,349,455.06
  5. Step 5: Solve for x
    x = 29,634,349,455.06/272,245.04
  6. Step 6: Final answer
    x = 108,851.75

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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.