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Finding the Fourth Proportional to 388,086.37, 535,495.68 and 224,684.66

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Solution

The fourth proportional to 388,086.37, 535,495.68 and 224,684.66 is: 310,028.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,086.37 : 535,495.68 = 224,684.66 : x
  2. Step 2: Convert to fraction form
    388,086.37/535,495.68 = 224,684.66/x
  3. Step 3: Cross multiply
    388,086.37x = 535,495.68 × 224,684.66
  4. Step 4: Simplify right side
    388,086.37x = 120,317,666,131.01
  5. Step 5: Solve for x
    x = 120,317,666,131.01/388,086.37
  6. Step 6: Final answer
    x = 310,028.07

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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.