Home / 209,425.18-314,138.64-65,332.78

Finding the Fourth Proportional to 209,425.18, 314,138.64 and 65,332.78

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Solution

The fourth proportional to 209,425.18, 314,138.64 and 65,332.78 is: 97,999.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,425.18 : 314,138.64 = 65,332.78 : x
  2. Step 2: Convert to fraction form
    209,425.18/314,138.64 = 65,332.78/x
  3. Step 3: Cross multiply
    209,425.18x = 314,138.64 × 65,332.78
  4. Step 4: Simplify right side
    209,425.18x = 20,523,550,656.62
  5. Step 5: Solve for x
    x = 20,523,550,656.62/209,425.18
  6. Step 6: Final answer
    x = 97,999.44

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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.