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Finding the Fourth Proportional to 307,392.68, 424,201.05 and 171,426.77

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Solution

The fourth proportional to 307,392.68, 424,201.05 and 171,426.77 is: 236,568.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,392.68 : 424,201.05 = 171,426.77 : x
  2. Step 2: Convert to fraction form
    307,392.68/424,201.05 = 171,426.77/x
  3. Step 3: Cross multiply
    307,392.68x = 424,201.05 × 171,426.77
  4. Step 4: Simplify right side
    307,392.68x = 72,719,413,711.10
  5. Step 5: Solve for x
    x = 72,719,413,711.10/307,392.68
  6. Step 6: Final answer
    x = 236,568.47

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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.