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Finding the Fourth Proportional to 487,568.79, 672,849.21 and 272,728.84

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Solution

The fourth proportional to 487,568.79, 672,849.21 and 272,728.84 is: 376,368.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,568.79 : 672,849.21 = 272,728.84 : x
  2. Step 2: Convert to fraction form
    487,568.79/672,849.21 = 272,728.84/x
  3. Step 3: Cross multiply
    487,568.79x = 672,849.21 × 272,728.84
  4. Step 4: Simplify right side
    487,568.79x = 183,505,384,538.22
  5. Step 5: Solve for x
    x = 183,505,384,538.22/487,568.79
  6. Step 6: Final answer
    x = 376,368.19

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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.