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Finding the Fourth Proportional to 272,309.13, 375,784.50 and 149,798.87

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Solution

The fourth proportional to 272,309.13, 375,784.50 and 149,798.87 is: 206,721.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,309.13 : 375,784.50 = 149,798.87 : x
  2. Step 2: Convert to fraction form
    272,309.13/375,784.50 = 149,798.87/x
  3. Step 3: Cross multiply
    272,309.13x = 375,784.50 × 149,798.87
  4. Step 4: Simplify right side
    272,309.13x = 56,292,093,463.52
  5. Step 5: Solve for x
    x = 56,292,093,463.52/272,309.13
  6. Step 6: Final answer
    x = 206,721.29

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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.