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Finding the Fourth Proportional to 307,685.88, 424,627.83 and 171,746.28

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Solution

The fourth proportional to 307,685.88, 424,627.83 and 171,746.28 is: 237,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,685.88 : 424,627.83 = 171,746.28 : x
  2. Step 2: Convert to fraction form
    307,685.88/424,627.83 = 171,746.28/x
  3. Step 3: Cross multiply
    307,685.88x = 424,627.83 × 171,746.28
  4. Step 4: Simplify right side
    307,685.88x = 72,928,250,186.97
  5. Step 5: Solve for x
    x = 72,928,250,186.97/307,685.88
  6. Step 6: Final answer
    x = 237,021.76

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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.