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Finding the Fourth Proportional to 368,781.49, 553,203.56 and 102,542.00

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Solution

The fourth proportional to 368,781.49, 553,203.56 and 102,542.00 is: 153,821.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,781.49 : 553,203.56 = 102,542.00 : x
  2. Step 2: Convert to fraction form
    368,781.49/553,203.56 = 102,542.00/x
  3. Step 3: Cross multiply
    368,781.49x = 553,203.56 × 102,542.00
  4. Step 4: Simplify right side
    368,781.49x = 56,726,600,065.86
  5. Step 5: Solve for x
    x = 56,726,600,065.86/368,781.49
  6. Step 6: Final answer
    x = 153,821.71

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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.