Home / 311,394.72-429,756.45-190,615.81

Finding the Fourth Proportional to 311,394.72, 429,756.45 and 190,615.81

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Solution

The fourth proportional to 311,394.72, 429,756.45 and 190,615.81 is: 263,069.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,394.72 : 429,756.45 = 190,615.81 : x
  2. Step 2: Convert to fraction form
    311,394.72/429,756.45 = 190,615.81/x
  3. Step 3: Cross multiply
    311,394.72x = 429,756.45 × 190,615.81
  4. Step 4: Simplify right side
    311,394.72x = 81,918,373,819.47
  5. Step 5: Solve for x
    x = 81,918,373,819.47/311,394.72
  6. Step 6: Final answer
    x = 263,069.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.