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Finding the Fourth Proportional to 307,678.64, 424,596.48 and 169,857.56

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Solution

The fourth proportional to 307,678.64, 424,596.48 and 169,857.56 is: 234,403.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,678.64 : 424,596.48 = 169,857.56 : x
  2. Step 2: Convert to fraction form
    307,678.64/424,596.48 = 169,857.56/x
  3. Step 3: Cross multiply
    307,678.64x = 424,596.48 × 169,857.56
  4. Step 4: Simplify right side
    307,678.64x = 72,120,922,077.39
  5. Step 5: Solve for x
    x = 72,120,922,077.39/307,678.64
  6. Step 6: Final answer
    x = 234,403.41

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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.