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Finding the Fourth Proportional to 311,257.40, 429,529.56 and 175,290.80

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Solution

The fourth proportional to 311,257.40, 429,529.56 and 175,290.80 is: 241,898.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,257.40 : 429,529.56 = 175,290.80 : x
  2. Step 2: Convert to fraction form
    311,257.40/429,529.56 = 175,290.80/x
  3. Step 3: Cross multiply
    311,257.40x = 429,529.56 × 175,290.80
  4. Step 4: Simplify right side
    311,257.40x = 75,292,580,196.05
  5. Step 5: Solve for x
    x = 75,292,580,196.05/311,257.40
  6. Step 6: Final answer
    x = 241,898.12

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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.