Home / 430,991.69-646,524.65-111,140.81

Finding the Fourth Proportional to 430,991.69, 646,524.65 and 111,140.81

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Solution

The fourth proportional to 430,991.69, 646,524.65 and 111,140.81 is: 166,720.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,991.69 : 646,524.65 = 111,140.81 : x
  2. Step 2: Convert to fraction form
    430,991.69/646,524.65 = 111,140.81/x
  3. Step 3: Cross multiply
    430,991.69x = 646,524.65 × 111,140.81
  4. Step 4: Simplify right side
    430,991.69x = 71,855,272,755.66
  5. Step 5: Solve for x
    x = 71,855,272,755.66/430,991.69
  6. Step 6: Final answer
    x = 166,720.79

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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.