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Finding the Fourth Proportional to 807,200.80, 1,210,282.80 and 334,074.40

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Solution

The fourth proportional to 807,200.80, 1,210,282.80 and 334,074.40 is: 500,897.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,200.80 : 1,210,282.80 = 334,074.40 : x
  2. Step 2: Convert to fraction form
    807,200.80/1,210,282.80 = 334,074.40/x
  3. Step 3: Cross multiply
    807,200.80x = 1,210,282.80 × 334,074.40
  4. Step 4: Simplify right side
    807,200.80x = 404,324,500,240.32
  5. Step 5: Solve for x
    x = 404,324,500,240.32/807,200.80
  6. Step 6: Final answer
    x = 500,897.05

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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.