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Finding the Fourth Proportional to 479,406.79, 718,688.94 and 195,336.21

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Solution

The fourth proportional to 479,406.79, 718,688.94 and 195,336.21 is: 292,832.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,406.79 : 718,688.94 = 195,336.21 : x
  2. Step 2: Convert to fraction form
    479,406.79/718,688.94 = 195,336.21/x
  3. Step 3: Cross multiply
    479,406.79x = 718,688.94 × 195,336.21
  4. Step 4: Simplify right side
    479,406.79x = 140,385,973,708.52
  5. Step 5: Solve for x
    x = 140,385,973,708.52/479,406.79
  6. Step 6: Final answer
    x = 292,832.68

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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.