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Finding the Fourth Proportional to 487,093.56, 672,130.80 and 269,272.80

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Solution

The fourth proportional to 487,093.56, 672,130.80 and 269,272.80 is: 371,564.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,093.56 : 672,130.80 = 269,272.80 : x
  2. Step 2: Convert to fraction form
    487,093.56/672,130.80 = 269,272.80/x
  3. Step 3: Cross multiply
    487,093.56x = 672,130.80 × 269,272.80
  4. Step 4: Simplify right side
    487,093.56x = 180,986,542,482.24
  5. Step 5: Solve for x
    x = 180,986,542,482.24/487,093.56
  6. Step 6: Final answer
    x = 371,564.23

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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.