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Finding the Fourth Proportional to 647,479.01, 971,307.13 and 220,900.30

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Solution

The fourth proportional to 647,479.01, 971,307.13 and 220,900.30 is: 331,380.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,479.01 : 971,307.13 = 220,900.30 : x
  2. Step 2: Convert to fraction form
    647,479.01/971,307.13 = 220,900.30/x
  3. Step 3: Cross multiply
    647,479.01x = 971,307.13 × 220,900.30
  4. Step 4: Simplify right side
    647,479.01x = 214,562,036,409.14
  5. Step 5: Solve for x
    x = 214,562,036,409.14/647,479.01
  6. Step 6: Final answer
    x = 331,380.68

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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.