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Finding the Fourth Proportional to 436,968.84, 655,582.86 and 137,490.78

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Solution

The fourth proportional to 436,968.84, 655,582.86 and 137,490.78 is: 206,276.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,968.84 : 655,582.86 = 137,490.78 : x
  2. Step 2: Convert to fraction form
    436,968.84/655,582.86 = 137,490.78/x
  3. Step 3: Cross multiply
    436,968.84x = 655,582.86 × 137,490.78
  4. Step 4: Simplify right side
    436,968.84x = 90,136,598,776.03
  5. Step 5: Solve for x
    x = 90,136,598,776.03/436,968.84
  6. Step 6: Final answer
    x = 206,276.95

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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.