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Finding the Fourth Proportional to 479,585.40, 719,377.92 and 142,624.68

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Solution

The fourth proportional to 479,585.40, 719,377.92 and 142,624.68 is: 213,936.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,585.40 : 719,377.92 = 142,624.68 : x
  2. Step 2: Convert to fraction form
    479,585.40/719,377.92 = 142,624.68/x
  3. Step 3: Cross multiply
    479,585.40x = 719,377.92 × 142,624.68
  4. Step 4: Simplify right side
    479,585.40x = 102,601,045,639.07
  5. Step 5: Solve for x
    x = 102,601,045,639.07/479,585.40
  6. Step 6: Final answer
    x = 213,936.97

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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.