Home / 352,619.80-528,929.70-212,306.20

Finding the Fourth Proportional to 352,619.80, 528,929.70 and 212,306.20

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Solution

The fourth proportional to 352,619.80, 528,929.70 and 212,306.20 is: 318,459.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,619.80 : 528,929.70 = 212,306.20 : x
  2. Step 2: Convert to fraction form
    352,619.80/528,929.70 = 212,306.20/x
  3. Step 3: Cross multiply
    352,619.80x = 528,929.70 × 212,306.20
  4. Step 4: Simplify right side
    352,619.80x = 112,295,054,674.14
  5. Step 5: Solve for x
    x = 112,295,054,674.14/352,619.80
  6. Step 6: Final answer
    x = 318,459.30

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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.