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Finding the Fourth Proportional to 210,568.86, 290,491.74 and 125,636.58

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Solution

The fourth proportional to 210,568.86, 290,491.74 and 125,636.58 is: 173,322.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,568.86 : 290,491.74 = 125,636.58 : x
  2. Step 2: Convert to fraction form
    210,568.86/290,491.74 = 125,636.58/x
  3. Step 3: Cross multiply
    210,568.86x = 290,491.74 × 125,636.58
  4. Step 4: Simplify right side
    210,568.86x = 36,496,388,731.85
  5. Step 5: Solve for x
    x = 36,496,388,731.85/210,568.86
  6. Step 6: Final answer
    x = 173,322.82

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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.