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Finding the Fourth Proportional to 311,086.57, 429,307.53 and 175,125.45

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Solution

The fourth proportional to 311,086.57, 429,307.53 and 175,125.45 is: 241,677.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,086.57 : 429,307.53 = 175,125.45 : x
  2. Step 2: Convert to fraction form
    311,086.57/429,307.53 = 175,125.45/x
  3. Step 3: Cross multiply
    311,086.57x = 429,307.53 × 175,125.45
  4. Step 4: Simplify right side
    311,086.57x = 75,182,673,958.64
  5. Step 5: Solve for x
    x = 75,182,673,958.64/311,086.57
  6. Step 6: Final answer
    x = 241,677.66

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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.