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Finding the Fourth Proportional to 266,890.50, 368,309.16 and 153,713.52

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Solution

The fourth proportional to 266,890.50, 368,309.16 and 153,713.52 is: 212,124.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,890.50 : 368,309.16 = 153,713.52 : x
  2. Step 2: Convert to fraction form
    266,890.50/368,309.16 = 153,713.52/x
  3. Step 3: Cross multiply
    266,890.50x = 368,309.16 × 153,713.52
  4. Step 4: Simplify right side
    266,890.50x = 56,614,097,431.84
  5. Step 5: Solve for x
    x = 56,614,097,431.84/266,890.50
  6. Step 6: Final answer
    x = 212,124.81

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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.