Home / 876,855.20-1,315,282.80-212,007.20

Finding the Fourth Proportional to 876,855.20, 1,315,282.80 and 212,007.20

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Solution

The fourth proportional to 876,855.20, 1,315,282.80 and 212,007.20 is: 318,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,855.20 : 1,315,282.80 = 212,007.20 : x
  2. Step 2: Convert to fraction form
    876,855.20/1,315,282.80 = 212,007.20/x
  3. Step 3: Cross multiply
    876,855.20x = 1,315,282.80 × 212,007.20
  4. Step 4: Simplify right side
    876,855.20x = 278,849,423,636.16
  5. Step 5: Solve for x
    x = 278,849,423,636.16/876,855.20
  6. Step 6: Final answer
    x = 318,010.80

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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.