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Finding the Fourth Proportional to 307,859.10, 424,841.46 and 171,895.32

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Solution

The fourth proportional to 307,859.10, 424,841.46 and 171,895.32 is: 237,213.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,859.10 : 424,841.46 = 171,895.32 : x
  2. Step 2: Convert to fraction form
    307,859.10/424,841.46 = 171,895.32/x
  3. Step 3: Cross multiply
    307,859.10x = 424,841.46 × 171,895.32
  4. Step 4: Simplify right side
    307,859.10x = 73,028,258,715.97
  5. Step 5: Solve for x
    x = 73,028,258,715.97/307,859.10
  6. Step 6: Final answer
    x = 237,213.25

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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.