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Finding the Fourth Proportional to 252,122.40, 348,018 and 225,218.16

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Solution

The fourth proportional to 252,122.40, 348,018 and 225,218.16 is: 310,880.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,122.40 : 348,018 = 225,218.16 : x
  2. Step 2: Convert to fraction form
    252,122.40/348,018 = 225,218.16/x
  3. Step 3: Cross multiply
    252,122.40x = 348,018 × 225,218.16
  4. Step 4: Simplify right side
    252,122.40x = 78,379,973,606.88
  5. Step 5: Solve for x
    x = 78,379,973,606.88/252,122.40
  6. Step 6: Final answer
    x = 310,880.64

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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.