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Finding the Fourth Proportional to 804,846.80, 1,207,270.20 and 213,870.80

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Solution

The fourth proportional to 804,846.80, 1,207,270.20 and 213,870.80 is: 320,806.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,846.80 : 1,207,270.20 = 213,870.80 : x
  2. Step 2: Convert to fraction form
    804,846.80/1,207,270.20 = 213,870.80/x
  3. Step 3: Cross multiply
    804,846.80x = 1,207,270.20 × 213,870.80
  4. Step 4: Simplify right side
    804,846.80x = 258,199,843,490.16
  5. Step 5: Solve for x
    x = 258,199,843,490.16/804,846.80
  6. Step 6: Final answer
    x = 320,806.20

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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.