Home / 426,742.05-640,208.39-160,504.86

Finding the Fourth Proportional to 426,742.05, 640,208.39 and 160,504.86

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Solution

The fourth proportional to 426,742.05, 640,208.39 and 160,504.86 is: 240,793.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,742.05 : 640,208.39 = 160,504.86 : x
  2. Step 2: Convert to fraction form
    426,742.05/640,208.39 = 160,504.86/x
  3. Step 3: Cross multiply
    426,742.05x = 640,208.39 × 160,504.86
  4. Step 4: Simplify right side
    426,742.05x = 102,756,558,007.78
  5. Step 5: Solve for x
    x = 102,756,558,007.78/426,742.05
  6. Step 6: Final answer
    x = 240,793.14

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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.