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Finding the Fourth Proportional to 311,175, 429,395.99 and 175,165.47

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Solution

The fourth proportional to 311,175, 429,395.99 and 175,165.47 is: 241,713.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,175 : 429,395.99 = 175,165.47 : x
  2. Step 2: Convert to fraction form
    311,175/429,395.99 = 175,165.47/x
  3. Step 3: Cross multiply
    311,175x = 429,395.99 × 175,165.47
  4. Step 4: Simplify right side
    311,175x = 75,215,349,528.64
  5. Step 5: Solve for x
    x = 75,215,349,528.64/311,175
  6. Step 6: Final answer
    x = 241,713.99

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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.