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Finding the Fourth Proportional to 285,418.08, 393,718.32 and 224,765.28

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Solution

The fourth proportional to 285,418.08, 393,718.32 and 224,765.28 is: 310,051.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,418.08 : 393,718.32 = 224,765.28 : x
  2. Step 2: Convert to fraction form
    285,418.08/393,718.32 = 224,765.28/x
  3. Step 3: Cross multiply
    285,418.08x = 393,718.32 × 224,765.28
  4. Step 4: Simplify right side
    285,418.08x = 88,494,208,435.93
  5. Step 5: Solve for x
    x = 88,494,208,435.93/285,418.08
  6. Step 6: Final answer
    x = 310,051.17

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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.