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Finding the Fourth Proportional to 311,393.27, 429,633.78 and 175,379.60

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Solution

The fourth proportional to 311,393.27, 429,633.78 and 175,379.60 is: 241,973.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,393.27 : 429,633.78 = 175,379.60 : x
  2. Step 2: Convert to fraction form
    311,393.27/429,633.78 = 175,379.60/x
  3. Step 3: Cross multiply
    311,393.27x = 429,633.78 × 175,379.60
  4. Step 4: Simplify right side
    311,393.27x = 75,349,000,482.89
  5. Step 5: Solve for x
    x = 75,349,000,482.89/311,393.27
  6. Step 6: Final answer
    x = 241,973.76

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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.