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Finding the Fourth Proportional to 436,271.76, 654,388.61 and 136,745.51

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Solution

The fourth proportional to 436,271.76, 654,388.61 and 136,745.51 is: 205,112.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,271.76 : 654,388.61 = 136,745.51 : x
  2. Step 2: Convert to fraction form
    436,271.76/654,388.61 = 136,745.51/x
  3. Step 3: Cross multiply
    436,271.76x = 654,388.61 × 136,745.51
  4. Step 4: Simplify right side
    436,271.76x = 89,484,700,256.97
  5. Step 5: Solve for x
    x = 89,484,700,256.97/436,271.76
  6. Step 6: Final answer
    x = 205,112.29

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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.