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Finding the Fourth Proportional to 345,703.11, 476,900.71 and 231,009.91

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Solution

The fourth proportional to 345,703.11, 476,900.71 and 231,009.91 is: 318,680.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,703.11 : 476,900.71 = 231,009.91 : x
  2. Step 2: Convert to fraction form
    345,703.11/476,900.71 = 231,009.91/x
  3. Step 3: Cross multiply
    345,703.11x = 476,900.71 × 231,009.91
  4. Step 4: Simplify right side
    345,703.11x = 110,168,789,625.69
  5. Step 5: Solve for x
    x = 110,168,789,625.69/345,703.11
  6. Step 6: Final answer
    x = 318,680.36

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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.