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Finding the Fourth Proportional to 211,128.46, 291,310.46 and 125,044.49

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Solution

The fourth proportional to 211,128.46, 291,310.46 and 125,044.49 is: 172,533.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,128.46 : 291,310.46 = 125,044.49 : x
  2. Step 2: Convert to fraction form
    211,128.46/291,310.46 = 125,044.49/x
  3. Step 3: Cross multiply
    211,128.46x = 291,310.46 × 125,044.49
  4. Step 4: Simplify right side
    211,128.46x = 36,426,768,474.34
  5. Step 5: Solve for x
    x = 36,426,768,474.34/211,128.46
  6. Step 6: Final answer
    x = 172,533.67

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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.