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Finding the Fourth Proportional to 388,295.67, 535,842.91 and 213,862.52

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Solution

The fourth proportional to 388,295.67, 535,842.91 and 213,862.52 is: 295,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,295.67 : 535,842.91 = 213,862.52 : x
  2. Step 2: Convert to fraction form
    388,295.67/535,842.91 = 213,862.52/x
  3. Step 3: Cross multiply
    388,295.67x = 535,842.91 × 213,862.52
  4. Step 4: Simplify right side
    388,295.67x = 114,596,715,861.68
  5. Step 5: Solve for x
    x = 114,596,715,861.68/388,295.67
  6. Step 6: Final answer
    x = 295,127.46

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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.