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Finding the Fourth Proportional to 230,813.01, 318,537.97 and 128,858.51

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Solution

The fourth proportional to 230,813.01, 318,537.97 and 128,858.51 is: 177,833.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,813.01 : 318,537.97 = 128,858.51 : x
  2. Step 2: Convert to fraction form
    230,813.01/318,537.97 = 128,858.51/x
  3. Step 3: Cross multiply
    230,813.01x = 318,537.97 × 128,858.51
  4. Step 4: Simplify right side
    230,813.01x = 41,046,328,666.82
  5. Step 5: Solve for x
    x = 41,046,328,666.82/230,813.01
  6. Step 6: Final answer
    x = 177,833.69

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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.