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Finding the Fourth Proportional to 378,063.45, 521,496.90 and 224,999.10

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Solution

The fourth proportional to 378,063.45, 521,496.90 and 224,999.10 is: 310,361.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,063.45 : 521,496.90 = 224,999.10 : x
  2. Step 2: Convert to fraction form
    378,063.45/521,496.90 = 224,999.10/x
  3. Step 3: Cross multiply
    378,063.45x = 521,496.90 × 224,999.10
  4. Step 4: Simplify right side
    378,063.45x = 117,336,333,152.79
  5. Step 5: Solve for x
    x = 117,336,333,152.79/378,063.45
  6. Step 6: Final answer
    x = 310,361.48

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1.5x scale

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.