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Finding the Fourth Proportional to 291,011.76, 401,592.24 and 163,687.20

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Solution

The fourth proportional to 291,011.76, 401,592.24 and 163,687.20 is: 225,886.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,011.76 : 401,592.24 = 163,687.20 : x
  2. Step 2: Convert to fraction form
    291,011.76/401,592.24 = 163,687.20/x
  3. Step 3: Cross multiply
    291,011.76x = 401,592.24 × 163,687.20
  4. Step 4: Simplify right side
    291,011.76x = 65,735,509,307.33
  5. Step 5: Solve for x
    x = 65,735,509,307.33/291,011.76
  6. Step 6: Final answer
    x = 225,886.09

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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.