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Finding the Fourth Proportional to 437,797.20, 655,237.80 and 317,512.20

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Solution

The fourth proportional to 437,797.20, 655,237.80 and 317,512.20 is: 475,210.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,797.20 : 655,237.80 = 317,512.20 : x
  2. Step 2: Convert to fraction form
    437,797.20/655,237.80 = 317,512.20/x
  3. Step 3: Cross multiply
    437,797.20x = 655,237.80 × 317,512.20
  4. Step 4: Simplify right side
    437,797.20x = 208,045,995,401.16
  5. Step 5: Solve for x
    x = 208,045,995,401.16/437,797.20
  6. Step 6: Final answer
    x = 475,210.89

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1.5x scale

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.