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Finding the Fourth Proportional to 372,240.80, 558,188.40 and 161,770.40

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Solution

The fourth proportional to 372,240.80, 558,188.40 and 161,770.40 is: 242,580.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,240.80 : 558,188.40 = 161,770.40 : x
  2. Step 2: Convert to fraction form
    372,240.80/558,188.40 = 161,770.40/x
  3. Step 3: Cross multiply
    372,240.80x = 558,188.40 × 161,770.40
  4. Step 4: Simplify right side
    372,240.80x = 90,298,360,743.36
  5. Step 5: Solve for x
    x = 90,298,360,743.36/372,240.80
  6. Step 6: Final answer
    x = 242,580.50

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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.