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Finding the Fourth Proportional to 445,477.32, 668,238.66 and 129,958.02

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Solution

The fourth proportional to 445,477.32, 668,238.66 and 129,958.02 is: 194,943.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,477.32 : 668,238.66 = 129,958.02 : x
  2. Step 2: Convert to fraction form
    445,477.32/668,238.66 = 129,958.02/x
  3. Step 3: Cross multiply
    445,477.32x = 668,238.66 × 129,958.02
  4. Step 4: Simplify right side
    445,477.32x = 86,842,973,141.05
  5. Step 5: Solve for x
    x = 86,842,973,141.05/445,477.32
  6. Step 6: Final answer
    x = 194,943.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.