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Finding the Fourth Proportional to 258,660.60, 356,920.29 and 143,912.16

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Solution

The fourth proportional to 258,660.60, 356,920.29 and 143,912.16 is: 198,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,660.60 : 356,920.29 = 143,912.16 : x
  2. Step 2: Convert to fraction form
    258,660.60/356,920.29 = 143,912.16/x
  3. Step 3: Cross multiply
    258,660.60x = 356,920.29 × 143,912.16
  4. Step 4: Simplify right side
    258,660.60x = 51,365,169,881.73
  5. Step 5: Solve for x
    x = 51,365,169,881.73/258,660.60
  6. Step 6: Final answer
    x = 198,581.35

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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.