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Finding the Fourth Proportional to 315,880.44, 434,816.55 and 275,523.93

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Solution

The fourth proportional to 315,880.44, 434,816.55 and 275,523.93 is: 379,264.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,880.44 : 434,816.55 = 275,523.93 : x
  2. Step 2: Convert to fraction form
    315,880.44/434,816.55 = 275,523.93/x
  3. Step 3: Cross multiply
    315,880.44x = 434,816.55 × 275,523.93
  4. Step 4: Simplify right side
    315,880.44x = 119,802,364,685.04
  5. Step 5: Solve for x
    x = 119,802,364,685.04/315,880.44
  6. Step 6: Final answer
    x = 379,264.90

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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.