Home / 409,803.13-614,704.70-129,342.25

Finding the Fourth Proportional to 409,803.13, 614,704.70 and 129,342.25

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Solution

The fourth proportional to 409,803.13, 614,704.70 and 129,342.25 is: 194,013.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,803.13 : 614,704.70 = 129,342.25 : x
  2. Step 2: Convert to fraction form
    409,803.13/614,704.70 = 129,342.25/x
  3. Step 3: Cross multiply
    409,803.13x = 614,704.70 × 129,342.25
  4. Step 4: Simplify right side
    409,803.13x = 79,507,288,983.58
  5. Step 5: Solve for x
    x = 79,507,288,983.58/409,803.13
  6. Step 6: Final answer
    x = 194,013.38

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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.