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Finding the Fourth Proportional to 311,309.46, 429,627.96 and 173,509.83

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Solution

The fourth proportional to 311,309.46, 429,627.96 and 173,509.83 is: 239,455.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,309.46 : 429,627.96 = 173,509.83 : x
  2. Step 2: Convert to fraction form
    311,309.46/429,627.96 = 173,509.83/x
  3. Step 3: Cross multiply
    311,309.46x = 429,627.96 × 173,509.83
  4. Step 4: Simplify right side
    311,309.46x = 74,544,674,302.85
  5. Step 5: Solve for x
    x = 74,544,674,302.85/311,309.46
  6. Step 6: Final answer
    x = 239,455.22

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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.