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Finding the Fourth Proportional to 220,897.62, 304,742.45 and 139,176.26

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Solution

The fourth proportional to 220,897.62, 304,742.45 and 139,176.26 is: 192,002.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,897.62 : 304,742.45 = 139,176.26 : x
  2. Step 2: Convert to fraction form
    220,897.62/304,742.45 = 139,176.26/x
  3. Step 3: Cross multiply
    220,897.62x = 304,742.45 × 139,176.26
  4. Step 4: Simplify right side
    220,897.62x = 42,412,912,234.64
  5. Step 5: Solve for x
    x = 42,412,912,234.64/220,897.62
  6. Step 6: Final answer
    x = 192,002.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.