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Finding the Fourth Proportional to 437,795.20, 655,234.80 and 317,510.20

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Solution

The fourth proportional to 437,795.20, 655,234.80 and 317,510.20 is: 475,207.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,795.20 : 655,234.80 = 317,510.20 : x
  2. Step 2: Convert to fraction form
    437,795.20/655,234.80 = 317,510.20/x
  3. Step 3: Cross multiply
    437,795.20x = 655,234.80 × 317,510.20
  4. Step 4: Simplify right side
    437,795.20x = 208,043,732,394.96
  5. Step 5: Solve for x
    x = 208,043,732,394.96/437,795.20
  6. Step 6: Final answer
    x = 475,207.89

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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.