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Finding the Fourth Proportional to 211,495, 291,889.02 and 122,071

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Solution

The fourth proportional to 211,495, 291,889.02 and 122,071 is: 168,472.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,495 : 291,889.02 = 122,071 : x
  2. Step 2: Convert to fraction form
    211,495/291,889.02 = 122,071/x
  3. Step 3: Cross multiply
    211,495x = 291,889.02 × 122,071
  4. Step 4: Simplify right side
    211,495x = 35,631,184,560.42
  5. Step 5: Solve for x
    x = 35,631,184,560.42/211,495
  6. Step 6: Final answer
    x = 168,472.94

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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.