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Finding the Fourth Proportional to 398,126.70, 597,186.34 and 161,413.10

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Solution

The fourth proportional to 398,126.70, 597,186.34 and 161,413.10 is: 242,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,126.70 : 597,186.34 = 161,413.10 : x
  2. Step 2: Convert to fraction form
    398,126.70/597,186.34 = 161,413.10/x
  3. Step 3: Cross multiply
    398,126.70x = 597,186.34 × 161,413.10
  4. Step 4: Simplify right side
    398,126.70x = 96,393,698,417.05
  5. Step 5: Solve for x
    x = 96,393,698,417.05/398,126.70
  6. Step 6: Final answer
    x = 242,118.15

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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.