Home / 312,438.12-431,165.04-169,198.38

Finding the Fourth Proportional to 312,438.12, 431,165.04 and 169,198.38

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Solution

The fourth proportional to 312,438.12, 431,165.04 and 169,198.38 is: 233,494.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,438.12 : 431,165.04 = 169,198.38 : x
  2. Step 2: Convert to fraction form
    312,438.12/431,165.04 = 169,198.38/x
  3. Step 3: Cross multiply
    312,438.12x = 431,165.04 × 169,198.38
  4. Step 4: Simplify right side
    312,438.12x = 72,952,426,280.64
  5. Step 5: Solve for x
    x = 72,952,426,280.64/312,438.12
  6. Step 6: Final answer
    x = 233,494.00

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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.