Home / 305,315.20-457,972.80-212,003.20

Finding the Fourth Proportional to 305,315.20, 457,972.80 and 212,003.20

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Solution

The fourth proportional to 305,315.20, 457,972.80 and 212,003.20 is: 318,004.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,315.20 : 457,972.80 = 212,003.20 : x
  2. Step 2: Convert to fraction form
    305,315.20/457,972.80 = 212,003.20/x
  3. Step 3: Cross multiply
    305,315.20x = 457,972.80 × 212,003.20
  4. Step 4: Simplify right side
    305,315.20x = 97,091,699,112.96
  5. Step 5: Solve for x
    x = 97,091,699,112.96/305,315.20
  6. Step 6: Final answer
    x = 318,004.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.