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Finding the Fourth Proportional to 388,012.50, 535,376.61 and 226,835.94

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Solution

The fourth proportional to 388,012.50, 535,376.61 and 226,835.94 is: 312,986.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,012.50 : 535,376.61 = 226,835.94 : x
  2. Step 2: Convert to fraction form
    388,012.50/535,376.61 = 226,835.94/x
  3. Step 3: Cross multiply
    388,012.50x = 535,376.61 × 226,835.94
  4. Step 4: Simplify right side
    388,012.50x = 121,442,656,583.36
  5. Step 5: Solve for x
    x = 121,442,656,583.36/388,012.50
  6. Step 6: Final answer
    x = 312,986.45

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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.