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Finding the Fourth Proportional to 258,007.71, 356,059.47 and 143,288.16

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Solution

The fourth proportional to 258,007.71, 356,059.47 and 143,288.16 is: 197,742.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,007.71 : 356,059.47 = 143,288.16 : x
  2. Step 2: Convert to fraction form
    258,007.71/356,059.47 = 143,288.16/x
  3. Step 3: Cross multiply
    258,007.71x = 356,059.47 × 143,288.16
  4. Step 4: Simplify right side
    258,007.71x = 51,019,106,306.88
  5. Step 5: Solve for x
    x = 51,019,106,306.88/258,007.71
  6. Step 6: Final answer
    x = 197,742.56

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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.