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Finding the Fourth Proportional to 270,243.72, 372,898.26 and 155,478.75

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Solution

The fourth proportional to 270,243.72, 372,898.26 and 155,478.75 is: 214,538.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,243.72 : 372,898.26 = 155,478.75 : x
  2. Step 2: Convert to fraction form
    270,243.72/372,898.26 = 155,478.75/x
  3. Step 3: Cross multiply
    270,243.72x = 372,898.26 × 155,478.75
  4. Step 4: Simplify right side
    270,243.72x = 57,977,755,341.98
  5. Step 5: Solve for x
    x = 57,977,755,341.98/270,243.72
  6. Step 6: Final answer
    x = 214,538.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.