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Finding the Fourth Proportional to 436,780.72, 655,174.71 and 121,262.23

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Solution

The fourth proportional to 436,780.72, 655,174.71 and 121,262.23 is: 181,894.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,780.72 : 655,174.71 = 121,262.23 : x
  2. Step 2: Convert to fraction form
    436,780.72/655,174.71 = 121,262.23/x
  3. Step 3: Cross multiply
    436,780.72x = 655,174.71 × 121,262.23
  4. Step 4: Simplify right side
    436,780.72x = 79,447,946,374.20
  5. Step 5: Solve for x
    x = 79,447,946,374.20/436,780.72
  6. Step 6: Final answer
    x = 181,894.35

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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.