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Finding the Fourth Proportional to 353,053.30, 487,325.02 and 225,729.40

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Solution

The fourth proportional to 353,053.30, 487,325.02 and 225,729.40 is: 311,577.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,053.30 : 487,325.02 = 225,729.40 : x
  2. Step 2: Convert to fraction form
    353,053.30/487,325.02 = 225,729.40/x
  3. Step 3: Cross multiply
    353,053.30x = 487,325.02 × 225,729.40
  4. Step 4: Simplify right side
    353,053.30x = 110,003,584,369.59
  5. Step 5: Solve for x
    x = 110,003,584,369.59/353,053.30
  6. Step 6: Final answer
    x = 311,577.84

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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.