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Finding the Fourth Proportional to 311,069.97, 429,271.79 and 175,103.51

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Solution

The fourth proportional to 311,069.97, 429,271.79 and 175,103.51 is: 241,640.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,069.97 : 429,271.79 = 175,103.51 : x
  2. Step 2: Convert to fraction form
    311,069.97/429,271.79 = 175,103.51/x
  3. Step 3: Cross multiply
    311,069.97x = 429,271.79 × 175,103.51
  4. Step 4: Simplify right side
    311,069.97x = 75,166,994,151.11
  5. Step 5: Solve for x
    x = 75,166,994,151.11/311,069.97
  6. Step 6: Final answer
    x = 241,640.15

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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.