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Finding the Fourth Proportional to 436,784.71, 655,180.73 and 121,266.22

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Solution

The fourth proportional to 436,784.71, 655,180.73 and 121,266.22 is: 181,900.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,784.71 : 655,180.73 = 121,266.22 : x
  2. Step 2: Convert to fraction form
    436,784.71/655,180.73 = 121,266.22/x
  3. Step 3: Cross multiply
    436,784.71x = 655,180.73 × 121,266.22
  4. Step 4: Simplify right side
    436,784.71x = 79,451,290,543.94
  5. Step 5: Solve for x
    x = 79,451,290,543.94/436,784.71
  6. Step 6: Final answer
    x = 181,900.35

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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.