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Finding the Fourth Proportional to 307,628.64, 424,511.24 and 173,484

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Solution

The fourth proportional to 307,628.64, 424,511.24 and 173,484 is: 239,398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,628.64 : 424,511.24 = 173,484 : x
  2. Step 2: Convert to fraction form
    307,628.64/424,511.24 = 173,484/x
  3. Step 3: Cross multiply
    307,628.64x = 424,511.24 × 173,484
  4. Step 4: Simplify right side
    307,628.64x = 73,645,907,960.16
  5. Step 5: Solve for x
    x = 73,645,907,960.16/307,628.64
  6. Step 6: Final answer
    x = 239,398.74

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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.