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Finding the Fourth Proportional to 479,134.16, 718,807.48 and 142,201.68

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Solution

The fourth proportional to 479,134.16, 718,807.48 and 142,201.68 is: 213,334.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,134.16 : 718,807.48 = 142,201.68 : x
  2. Step 2: Convert to fraction form
    479,134.16/718,807.48 = 142,201.68/x
  3. Step 3: Cross multiply
    479,134.16x = 718,807.48 × 142,201.68
  4. Step 4: Simplify right side
    479,134.16x = 102,215,631,252.57
  5. Step 5: Solve for x
    x = 102,215,631,252.57/479,134.16
  6. Step 6: Final answer
    x = 213,334.05

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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.