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Finding the Fourth Proportional to 311,739.68, 430,200.50 and 168,499.72

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Solution

The fourth proportional to 311,739.68, 430,200.50 and 168,499.72 is: 232,529.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,739.68 : 430,200.50 = 168,499.72 : x
  2. Step 2: Convert to fraction form
    311,739.68/430,200.50 = 168,499.72/x
  3. Step 3: Cross multiply
    311,739.68x = 430,200.50 × 168,499.72
  4. Step 4: Simplify right side
    311,739.68x = 72,488,664,232.74
  5. Step 5: Solve for x
    x = 72,488,664,232.74/311,739.68
  6. Step 6: Final answer
    x = 232,529.48

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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.