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Finding the Fourth Proportional to 672,210.40, 1,008,704.40 and 251,528.80

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Solution

The fourth proportional to 672,210.40, 1,008,704.40 and 251,528.80 is: 377,438.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,210.40 : 1,008,704.40 = 251,528.80 : x
  2. Step 2: Convert to fraction form
    672,210.40/1,008,704.40 = 251,528.80/x
  3. Step 3: Cross multiply
    672,210.40x = 1,008,704.40 × 251,528.80
  4. Step 4: Simplify right side
    672,210.40x = 253,718,207,286.72
  5. Step 5: Solve for x
    x = 253,718,207,286.72/672,210.40
  6. Step 6: Final answer
    x = 377,438.68

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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.