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Finding the Fourth Proportional to 291,116.70, 401,712.48 and 163,789.56

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Solution

The fourth proportional to 291,116.70, 401,712.48 and 163,789.56 is: 226,013.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,116.70 : 401,712.48 = 163,789.56 : x
  2. Step 2: Convert to fraction form
    291,116.70/401,712.48 = 163,789.56/x
  3. Step 3: Cross multiply
    291,116.70x = 401,712.48 × 163,789.56
  4. Step 4: Simplify right side
    291,116.70x = 65,796,310,345.71
  5. Step 5: Solve for x
    x = 65,796,310,345.71/291,116.70
  6. Step 6: Final answer
    x = 226,013.52

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1.5x scale

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.