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Finding the Fourth Proportional to 479,056.68, 718,462.41 and 142,018.52

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Solution

The fourth proportional to 479,056.68, 718,462.41 and 142,018.52 is: 212,991.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,056.68 : 718,462.41 = 142,018.52 : x
  2. Step 2: Convert to fraction form
    479,056.68/718,462.41 = 142,018.52/x
  3. Step 3: Cross multiply
    479,056.68x = 718,462.41 × 142,018.52
  4. Step 4: Simplify right side
    479,056.68x = 102,034,964,018.95
  5. Step 5: Solve for x
    x = 102,034,964,018.95/479,056.68
  6. Step 6: Final answer
    x = 212,991.42

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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.