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Finding the Fourth Proportional to 436,890.60, 655,335.90 and 121,350.60

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Solution

The fourth proportional to 436,890.60, 655,335.90 and 121,350.60 is: 182,025.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,890.60 : 655,335.90 = 121,350.60 : x
  2. Step 2: Convert to fraction form
    436,890.60/655,335.90 = 121,350.60/x
  3. Step 3: Cross multiply
    436,890.60x = 655,335.90 × 121,350.60
  4. Step 4: Simplify right side
    436,890.60x = 79,525,404,666.54
  5. Step 5: Solve for x
    x = 79,525,404,666.54/436,890.60
  6. Step 6: Final answer
    x = 182,025.90

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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.