Home / 356,013.21-491,215.65-210,745.83

Finding the Fourth Proportional to 356,013.21, 491,215.65 and 210,745.83

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Solution

The fourth proportional to 356,013.21, 491,215.65 and 210,745.83 is: 290,780.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,013.21 : 491,215.65 = 210,745.83 : x
  2. Step 2: Convert to fraction form
    356,013.21/491,215.65 = 210,745.83/x
  3. Step 3: Cross multiply
    356,013.21x = 491,215.65 × 210,745.83
  4. Step 4: Simplify right side
    356,013.21x = 103,521,649,868.24
  5. Step 5: Solve for x
    x = 103,521,649,868.24/356,013.21
  6. Step 6: Final answer
    x = 290,780.36

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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.