Home / 436,815.78-655,223.40-121,272.60

Finding the Fourth Proportional to 436,815.78, 655,223.40 and 121,272.60

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Solution

The fourth proportional to 436,815.78, 655,223.40 and 121,272.60 is: 181,908.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,815.78 : 655,223.40 = 121,272.60 : x
  2. Step 2: Convert to fraction form
    436,815.78/655,223.40 = 121,272.60/x
  3. Step 3: Cross multiply
    436,815.78x = 655,223.40 × 121,272.60
  4. Step 4: Simplify right side
    436,815.78x = 79,460,645,298.84
  5. Step 5: Solve for x
    x = 79,460,645,298.84/436,815.78
  6. Step 6: Final answer
    x = 181,908.83

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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.