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Finding the Fourth Proportional to 307,640.21, 424,543.57 and 169,819.22

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Solution

The fourth proportional to 307,640.21, 424,543.57 and 169,819.22 is: 234,350.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,640.21 : 424,543.57 = 169,819.22 : x
  2. Step 2: Convert to fraction form
    307,640.21/424,543.57 = 169,819.22/x
  3. Step 3: Cross multiply
    307,640.21x = 424,543.57 × 169,819.22
  4. Step 4: Simplify right side
    307,640.21x = 72,095,655,366.15
  5. Step 5: Solve for x
    x = 72,095,655,366.15/307,640.21
  6. Step 6: Final answer
    x = 234,350.56

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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.