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Finding the Fourth Proportional to 312,483.24, 431,228.88 and 169,245

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Solution

The fourth proportional to 312,483.24, 431,228.88 and 169,245 is: 233,559.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,483.24 : 431,228.88 = 169,245 : x
  2. Step 2: Convert to fraction form
    312,483.24/431,228.88 = 169,245/x
  3. Step 3: Cross multiply
    312,483.24x = 431,228.88 × 169,245
  4. Step 4: Simplify right side
    312,483.24x = 72,983,331,795.60
  5. Step 5: Solve for x
    x = 72,983,331,795.60/312,483.24
  6. Step 6: Final answer
    x = 233,559.19

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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.