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Finding the Fourth Proportional to 401,221.16, 601,923.98 and 131,357.98

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Solution

The fourth proportional to 401,221.16, 601,923.98 and 131,357.98 is: 197,067.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,221.16 : 601,923.98 = 131,357.98 : x
  2. Step 2: Convert to fraction form
    401,221.16/601,923.98 = 131,357.98/x
  3. Step 3: Cross multiply
    401,221.16x = 601,923.98 × 131,357.98
  4. Step 4: Simplify right side
    401,221.16x = 79,067,518,126.36
  5. Step 5: Solve for x
    x = 79,067,518,126.36/401,221.16
  6. Step 6: Final answer
    x = 197,067.17

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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.