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Finding the Fourth Proportional to 247,320.72, 341,266.37 and 138,424.32

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Solution

The fourth proportional to 247,320.72, 341,266.37 and 138,424.32 is: 191,005.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,320.72 : 341,266.37 = 138,424.32 : x
  2. Step 2: Convert to fraction form
    247,320.72/341,266.37 = 138,424.32/x
  3. Step 3: Cross multiply
    247,320.72x = 341,266.37 × 138,424.32
  4. Step 4: Simplify right side
    247,320.72x = 47,239,564,514.00
  5. Step 5: Solve for x
    x = 47,239,564,514.00/247,320.72
  6. Step 6: Final answer
    x = 191,005.28

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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.