Home / 382,983.12-528,482.88-221,786.64

Finding the Fourth Proportional to 382,983.12, 528,482.88 and 221,786.64

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Solution

The fourth proportional to 382,983.12, 528,482.88 and 221,786.64 is: 306,045.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,983.12 : 528,482.88 = 221,786.64 : x
  2. Step 2: Convert to fraction form
    382,983.12/528,482.88 = 221,786.64/x
  3. Step 3: Cross multiply
    382,983.12x = 528,482.88 × 221,786.64
  4. Step 4: Simplify right side
    382,983.12x = 117,210,442,252.72
  5. Step 5: Solve for x
    x = 117,210,442,252.72/382,983.12
  6. Step 6: Final answer
    x = 306,045.97

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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.