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Finding the Fourth Proportional to 388,887.82, 536,720.79 and 219,137.74

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Solution

The fourth proportional to 388,887.82, 536,720.79 and 219,137.74 is: 302,441.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,887.82 : 536,720.79 = 219,137.74 : x
  2. Step 2: Convert to fraction form
    388,887.82/536,720.79 = 219,137.74/x
  3. Step 3: Cross multiply
    388,887.82x = 536,720.79 × 219,137.74
  4. Step 4: Simplify right side
    388,887.82x = 117,615,780,931.62
  5. Step 5: Solve for x
    x = 117,615,780,931.62/388,887.82
  6. Step 6: Final answer
    x = 302,441.41

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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.