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Finding the Fourth Proportional to 293,603.82, 405,154.08 and 172,721.76

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Solution

The fourth proportional to 293,603.82, 405,154.08 and 172,721.76 is: 238,344.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,603.82 : 405,154.08 = 172,721.76 : x
  2. Step 2: Convert to fraction form
    293,603.82/405,154.08 = 172,721.76/x
  3. Step 3: Cross multiply
    293,603.82x = 405,154.08 × 172,721.76
  4. Step 4: Simplify right side
    293,603.82x = 69,978,925,768.78
  5. Step 5: Solve for x
    x = 69,978,925,768.78/293,603.82
  6. Step 6: Final answer
    x = 238,344.74

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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.