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Finding the Fourth Proportional to 647,632.80, 971,522.10 and 198,350.10

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Solution

The fourth proportional to 647,632.80, 971,522.10 and 198,350.10 is: 297,547.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,632.80 : 971,522.10 = 198,350.10 : x
  2. Step 2: Convert to fraction form
    647,632.80/971,522.10 = 198,350.10/x
  3. Step 3: Cross multiply
    647,632.80x = 971,522.10 × 198,350.10
  4. Step 4: Simplify right side
    647,632.80x = 192,701,505,687.21
  5. Step 5: Solve for x
    x = 192,701,505,687.21/647,632.80
  6. Step 6: Final answer
    x = 297,547.48

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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.