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Finding the Fourth Proportional to 487,317.97, 672,479.11 and 269,512.31

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Solution

The fourth proportional to 487,317.97, 672,479.11 and 269,512.31 is: 371,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,317.97 : 672,479.11 = 269,512.31 : x
  2. Step 2: Convert to fraction form
    487,317.97/672,479.11 = 269,512.31/x
  3. Step 3: Cross multiply
    487,317.97x = 672,479.11 × 269,512.31
  4. Step 4: Simplify right side
    487,317.97x = 181,241,400,380.93
  5. Step 5: Solve for x
    x = 181,241,400,380.93/487,317.97
  6. Step 6: Final answer
    x = 371,916.10

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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.