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Finding the Fourth Proportional to 395,880.45, 545,582.37 and 281,164.11

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Solution

The fourth proportional to 395,880.45, 545,582.37 and 281,164.11 is: 387,486.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,880.45 : 545,582.37 = 281,164.11 : x
  2. Step 2: Convert to fraction form
    395,880.45/545,582.37 = 281,164.11/x
  3. Step 3: Cross multiply
    395,880.45x = 545,582.37 × 281,164.11
  4. Step 4: Simplify right side
    395,880.45x = 153,398,181,492.74
  5. Step 5: Solve for x
    x = 153,398,181,492.74/395,880.45
  6. Step 6: Final answer
    x = 387,486.12

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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.