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Finding the Fourth Proportional to 311,395.69, 429,727.37 and 175,431.26

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Solution

The fourth proportional to 311,395.69, 429,727.37 and 175,431.26 is: 242,095.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,395.69 : 429,727.37 = 175,431.26 : x
  2. Step 2: Convert to fraction form
    311,395.69/429,727.37 = 175,431.26/x
  3. Step 3: Cross multiply
    311,395.69x = 429,727.37 × 175,431.26
  4. Step 4: Simplify right side
    311,395.69x = 75,387,613,975.59
  5. Step 5: Solve for x
    x = 75,387,613,975.59/311,395.69
  6. Step 6: Final answer
    x = 242,095.88

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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.