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Finding the Fourth Proportional to 381,172.01, 526,004.02 and 211,421.93

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Solution

The fourth proportional to 381,172.01, 526,004.02 and 211,421.93 is: 291,754.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,172.01 : 526,004.02 = 211,421.93 : x
  2. Step 2: Convert to fraction form
    381,172.01/526,004.02 = 211,421.93/x
  3. Step 3: Cross multiply
    381,172.01x = 526,004.02 × 211,421.93
  4. Step 4: Simplify right side
    381,172.01x = 111,208,785,096.16
  5. Step 5: Solve for x
    x = 111,208,785,096.16/381,172.01
  6. Step 6: Final answer
    x = 291,754.86

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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.