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Finding the Fourth Proportional to 472,429.56, 708,499.00 and 135,379.86

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Solution

The fourth proportional to 472,429.56, 708,499.00 and 135,379.86 is: 203,028.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,429.56 : 708,499.00 = 135,379.86 : x
  2. Step 2: Convert to fraction form
    472,429.56/708,499.00 = 135,379.86/x
  3. Step 3: Cross multiply
    472,429.56x = 708,499.00 × 135,379.86
  4. Step 4: Simplify right side
    472,429.56x = 95,916,492,942.49
  5. Step 5: Solve for x
    x = 95,916,492,942.49/472,429.56
  6. Step 6: Final answer
    x = 203,028.13

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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.