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Finding the Fourth Proportional to 399,150.88, 550,828.23 and 272,048.51

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Solution

The fourth proportional to 399,150.88, 550,828.23 and 272,048.51 is: 375,426.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,150.88 : 550,828.23 = 272,048.51 : x
  2. Step 2: Convert to fraction form
    399,150.88/550,828.23 = 272,048.51/x
  3. Step 3: Cross multiply
    399,150.88x = 550,828.23 × 272,048.51
  4. Step 4: Simplify right side
    399,150.88x = 149,851,999,237.44
  5. Step 5: Solve for x
    x = 149,851,999,237.44/399,150.88
  6. Step 6: Final answer
    x = 375,426.95

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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.