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Finding the Fourth Proportional to 211,373.66, 291,693.87 and 115,880.13

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Solution

The fourth proportional to 211,373.66, 291,693.87 and 115,880.13 is: 159,913.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,373.66 : 291,693.87 = 115,880.13 : x
  2. Step 2: Convert to fraction form
    211,373.66/291,693.87 = 115,880.13/x
  3. Step 3: Cross multiply
    211,373.66x = 291,693.87 × 115,880.13
  4. Step 4: Simplify right side
    211,373.66x = 33,801,523,575.80
  5. Step 5: Solve for x
    x = 33,801,523,575.80/211,373.66
  6. Step 6: Final answer
    x = 159,913.61

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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.