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Finding the Fourth Proportional to 291,957.06, 402,903.64 and 171,169.86

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Solution

The fourth proportional to 291,957.06, 402,903.64 and 171,169.86 is: 236,216.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,957.06 : 402,903.64 = 171,169.86 : x
  2. Step 2: Convert to fraction form
    291,957.06/402,903.64 = 171,169.86/x
  3. Step 3: Cross multiply
    291,957.06x = 402,903.64 × 171,169.86
  4. Step 4: Simplify right side
    291,957.06x = 68,964,959,652.29
  5. Step 5: Solve for x
    x = 68,964,959,652.29/291,957.06
  6. Step 6: Final answer
    x = 236,216.11

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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.