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Finding the Fourth Proportional to 258,251.90, 356,396.76 and 143,532.81

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Solution

The fourth proportional to 258,251.90, 356,396.76 and 143,532.81 is: 198,080.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,251.90 : 356,396.76 = 143,532.81 : x
  2. Step 2: Convert to fraction form
    258,251.90/356,396.76 = 143,532.81/x
  3. Step 3: Cross multiply
    258,251.90x = 356,396.76 × 143,532.81
  4. Step 4: Simplify right side
    258,251.90x = 51,154,628,437.70
  5. Step 5: Solve for x
    x = 51,154,628,437.70/258,251.90
  6. Step 6: Final answer
    x = 198,080.36

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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.