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Finding the Fourth Proportional to 538,665.15, 743,220.14 and 342,360.03

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Solution

The fourth proportional to 538,665.15, 743,220.14 and 342,360.03 is: 472,369.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,665.15 : 743,220.14 = 342,360.03 : x
  2. Step 2: Convert to fraction form
    538,665.15/743,220.14 = 342,360.03/x
  3. Step 3: Cross multiply
    538,665.15x = 743,220.14 × 342,360.03
  4. Step 4: Simplify right side
    538,665.15x = 254,448,867,715.20
  5. Step 5: Solve for x
    x = 254,448,867,715.20/538,665.15
  6. Step 6: Final answer
    x = 472,369.28

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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.