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Finding the Fourth Proportional to 291,069.62, 401,529.08 and 170,131.89

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Solution

The fourth proportional to 291,069.62, 401,529.08 and 170,131.89 is: 234,696.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,069.62 : 401,529.08 = 170,131.89 : x
  2. Step 2: Convert to fraction form
    291,069.62/401,529.08 = 170,131.89/x
  3. Step 3: Cross multiply
    291,069.62x = 401,529.08 × 170,131.89
  4. Step 4: Simplify right side
    291,069.62x = 68,312,900,419.70
  5. Step 5: Solve for x
    x = 68,312,900,419.70/291,069.62
  6. Step 6: Final answer
    x = 234,696.09

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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.