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Finding the Fourth Proportional to 479,047.53, 718,448.68 and 142,009.39

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Solution

The fourth proportional to 479,047.53, 718,448.68 and 142,009.39 is: 212,977.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,047.53 : 718,448.68 = 142,009.39 : x
  2. Step 2: Convert to fraction form
    479,047.53/718,448.68 = 142,009.39/x
  3. Step 3: Cross multiply
    479,047.53x = 718,448.68 × 142,009.39
  4. Step 4: Simplify right side
    479,047.53x = 102,026,458,793.11
  5. Step 5: Solve for x
    x = 102,026,458,793.11/479,047.53
  6. Step 6: Final answer
    x = 212,977.74

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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.