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Finding the Fourth Proportional to 311,358.75, 429,649.56 and 175,349.22

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Solution

The fourth proportional to 311,358.75, 429,649.56 and 175,349.22 is: 241,967.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,358.75 : 429,649.56 = 175,349.22 : x
  2. Step 2: Convert to fraction form
    311,358.75/429,649.56 = 175,349.22/x
  3. Step 3: Cross multiply
    311,358.75x = 429,649.56 × 175,349.22
  4. Step 4: Simplify right side
    311,358.75x = 75,338,715,219.34
  5. Step 5: Solve for x
    x = 75,338,715,219.34/311,358.75
  6. Step 6: Final answer
    x = 241,967.55

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1.5x scale

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.