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Finding the Fourth Proportional to 437,212.20, 655,818.30 and 157,045.80

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Solution

The fourth proportional to 437,212.20, 655,818.30 and 157,045.80 is: 235,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,212.20 : 655,818.30 = 157,045.80 : x
  2. Step 2: Convert to fraction form
    437,212.20/655,818.30 = 157,045.80/x
  3. Step 3: Cross multiply
    437,212.20x = 655,818.30 × 157,045.80
  4. Step 4: Simplify right side
    437,212.20x = 102,993,509,578.14
  5. Step 5: Solve for x
    x = 102,993,509,578.14/437,212.20
  6. Step 6: Final answer
    x = 235,568.70

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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.