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Finding the Fourth Proportional to 272,035.60, 408,052.80 and 72,356.02

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Solution

The fourth proportional to 272,035.60, 408,052.80 and 72,356.02 is: 108,533.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,035.60 : 408,052.80 = 72,356.02 : x
  2. Step 2: Convert to fraction form
    272,035.60/408,052.80 = 72,356.02/x
  3. Step 3: Cross multiply
    272,035.60x = 408,052.80 × 72,356.02
  4. Step 4: Simplify right side
    272,035.60x = 29,525,076,557.86
  5. Step 5: Solve for x
    x = 29,525,076,557.86/272,035.60
  6. Step 6: Final answer
    x = 108,533.87

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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.