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Finding the Fourth Proportional to 387,343.51, 579,937.49 and 197,394.32

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Solution

The fourth proportional to 387,343.51, 579,937.49 and 197,394.32 is: 295,542.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,343.51 : 579,937.49 = 197,394.32 : x
  2. Step 2: Convert to fraction form
    387,343.51/579,937.49 = 197,394.32/x
  3. Step 3: Cross multiply
    387,343.51x = 579,937.49 × 197,394.32
  4. Step 4: Simplify right side
    387,343.51x = 114,476,365,494.09
  5. Step 5: Solve for x
    x = 114,476,365,494.09/387,343.51
  6. Step 6: Final answer
    x = 295,542.24

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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.