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Finding the Fourth Proportional to 386,583.69, 579,642.51 and 173,313

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Solution

The fourth proportional to 386,583.69, 579,642.51 and 173,313 is: 259,865.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,583.69 : 579,642.51 = 173,313 : x
  2. Step 2: Convert to fraction form
    386,583.69/579,642.51 = 173,313/x
  3. Step 3: Cross multiply
    386,583.69x = 579,642.51 × 173,313
  4. Step 4: Simplify right side
    386,583.69x = 100,459,582,335.63
  5. Step 5: Solve for x
    x = 100,459,582,335.63/386,583.69
  6. Step 6: Final answer
    x = 259,865.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.