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Finding the Fourth Proportional to 455,527.20, 683,290.80 and 206,209.20

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Solution

The fourth proportional to 455,527.20, 683,290.80 and 206,209.20 is: 309,313.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,527.20 : 683,290.80 = 206,209.20 : x
  2. Step 2: Convert to fraction form
    455,527.20/683,290.80 = 206,209.20/x
  3. Step 3: Cross multiply
    455,527.20x = 683,290.80 × 206,209.20
  4. Step 4: Simplify right side
    455,527.20x = 140,900,849,235.36
  5. Step 5: Solve for x
    x = 140,900,849,235.36/455,527.20
  6. Step 6: Final answer
    x = 309,313.80

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Similar ratio
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1.5x scale

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.