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Finding the Fourth Proportional to 266,741.51, 368,462.72 and 213,407.87

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Solution

The fourth proportional to 266,741.51, 368,462.72 and 213,407.87 is: 294,790.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,741.51 : 368,462.72 = 213,407.87 : x
  2. Step 2: Convert to fraction form
    266,741.51/368,462.72 = 213,407.87/x
  3. Step 3: Cross multiply
    266,741.51x = 368,462.72 × 213,407.87
  4. Step 4: Simplify right side
    266,741.51x = 78,632,842,940.81
  5. Step 5: Solve for x
    x = 78,632,842,940.81/266,741.51
  6. Step 6: Final answer
    x = 294,790.43

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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.