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Finding the Fourth Proportional to 291,516.72, 402,393.72 and 170,696.84

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Solution

The fourth proportional to 291,516.72, 402,393.72 and 170,696.84 is: 235,620.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,516.72 : 402,393.72 = 170,696.84 : x
  2. Step 2: Convert to fraction form
    291,516.72/402,393.72 = 170,696.84/x
  3. Step 3: Cross multiply
    291,516.72x = 402,393.72 × 170,696.84
  4. Step 4: Simplify right side
    291,516.72x = 68,687,336,439.84
  5. Step 5: Solve for x
    x = 68,687,336,439.84/291,516.72
  6. Step 6: Final answer
    x = 235,620.57

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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.