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Finding the Fourth Proportional to 272,035.75, 408,053.10 and 72,356.35

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Solution

The fourth proportional to 272,035.75, 408,053.10 and 72,356.35 is: 108,534.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,035.75 : 408,053.10 = 72,356.35 : x
  2. Step 2: Convert to fraction form
    272,035.75/408,053.10 = 72,356.35/x
  3. Step 3: Cross multiply
    272,035.75x = 408,053.10 × 72,356.35
  4. Step 4: Simplify right side
    272,035.75x = 29,525,232,922.19
  5. Step 5: Solve for x
    x = 29,525,232,922.19/272,035.75
  6. Step 6: Final answer
    x = 108,534.39

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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.