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Finding the Fourth Proportional to 312,332.67, 431,021.25 and 169,093.08

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Solution

The fourth proportional to 312,332.67, 431,021.25 and 169,093.08 is: 233,349.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,332.67 : 431,021.25 = 169,093.08 : x
  2. Step 2: Convert to fraction form
    312,332.67/431,021.25 = 169,093.08/x
  3. Step 3: Cross multiply
    312,332.67x = 431,021.25 × 169,093.08
  4. Step 4: Simplify right side
    312,332.67x = 72,882,710,707.95
  5. Step 5: Solve for x
    x = 72,882,710,707.95/312,332.67
  6. Step 6: Final answer
    x = 233,349.62

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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.