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Finding the Fourth Proportional to 372,100.40, 558,280.20 and 161,889.20

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Solution

The fourth proportional to 372,100.40, 558,280.20 and 161,889.20 is: 242,890.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,100.40 : 558,280.20 = 161,889.20 : x
  2. Step 2: Convert to fraction form
    372,100.40/558,280.20 = 161,889.20/x
  3. Step 3: Cross multiply
    372,100.40x = 558,280.20 × 161,889.20
  4. Step 4: Simplify right side
    372,100.40x = 90,379,534,953.84
  5. Step 5: Solve for x
    x = 90,379,534,953.84/372,100.40
  6. Step 6: Final answer
    x = 242,890.18

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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.