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Finding the Fourth Proportional to 311,555.04, 429,945.21 and 168,314.64

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Solution

The fourth proportional to 311,555.04, 429,945.21 and 168,314.64 is: 232,273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,555.04 : 429,945.21 = 168,314.64 : x
  2. Step 2: Convert to fraction form
    311,555.04/429,945.21 = 168,314.64/x
  3. Step 3: Cross multiply
    311,555.04x = 429,945.21 × 168,314.64
  4. Step 4: Simplify right side
    311,555.04x = 72,366,073,240.87
  5. Step 5: Solve for x
    x = 72,366,073,240.87/311,555.04
  6. Step 6: Final answer
    x = 232,273.80

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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.