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Finding the Fourth Proportional to 388,649.76, 536,374.92 and 227,495.04

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Solution

The fourth proportional to 388,649.76, 536,374.92 and 227,495.04 is: 313,965.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,649.76 : 536,374.92 = 227,495.04 : x
  2. Step 2: Convert to fraction form
    388,649.76/536,374.92 = 227,495.04/x
  3. Step 3: Cross multiply
    388,649.76x = 536,374.92 × 227,495.04
  4. Step 4: Simplify right side
    388,649.76x = 122,022,633,880.40
  5. Step 5: Solve for x
    x = 122,022,633,880.40/388,649.76
  6. Step 6: Final answer
    x = 313,965.55

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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.