Home / 403,686.30-605,529.45-193,215.90

Finding the Fourth Proportional to 403,686.30, 605,529.45 and 193,215.90

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Solution

The fourth proportional to 403,686.30, 605,529.45 and 193,215.90 is: 289,823.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,686.30 : 605,529.45 = 193,215.90 : x
  2. Step 2: Convert to fraction form
    403,686.30/605,529.45 = 193,215.90/x
  3. Step 3: Cross multiply
    403,686.30x = 605,529.45 × 193,215.90
  4. Step 4: Simplify right side
    403,686.30x = 116,997,917,658.26
  5. Step 5: Solve for x
    x = 116,997,917,658.26/403,686.30
  6. Step 6: Final answer
    x = 289,823.85

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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.