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Finding the Fourth Proportional to 258,369.10, 356,549.00 and 143,644.10

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Solution

The fourth proportional to 258,369.10, 356,549.00 and 143,644.10 is: 198,228.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,369.10 : 356,549.00 = 143,644.10 : x
  2. Step 2: Convert to fraction form
    258,369.10/356,549.00 = 143,644.10/x
  3. Step 3: Cross multiply
    258,369.10x = 356,549.00 × 143,644.10
  4. Step 4: Simplify right side
    258,369.10x = 51,216,159,221.33
  5. Step 5: Solve for x
    x = 51,216,159,221.33/258,369.10
  6. Step 6: Final answer
    x = 198,228.65

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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.