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Finding the Fourth Proportional to 291,117.70, 401,713.86 and 163,790.56

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Solution

The fourth proportional to 291,117.70, 401,713.86 and 163,790.56 is: 226,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,117.70 : 401,713.86 = 163,790.56 : x
  2. Step 2: Convert to fraction form
    291,117.70/401,713.86 = 163,790.56/x
  3. Step 3: Cross multiply
    291,117.70x = 401,713.86 × 163,790.56
  4. Step 4: Simplify right side
    291,117.70x = 65,796,938,089.16
  5. Step 5: Solve for x
    x = 65,796,938,089.16/291,117.70
  6. Step 6: Final answer
    x = 226,014.90

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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.