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Finding the Fourth Proportional to 455,596.80, 683,395.20 and 243,020.40

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Solution

The fourth proportional to 455,596.80, 683,395.20 and 243,020.40 is: 364,530.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,596.80 : 683,395.20 = 243,020.40 : x
  2. Step 2: Convert to fraction form
    455,596.80/683,395.20 = 243,020.40/x
  3. Step 3: Cross multiply
    455,596.80x = 683,395.20 × 243,020.40
  4. Step 4: Simplify right side
    455,596.80x = 166,078,974,862.08
  5. Step 5: Solve for x
    x = 166,078,974,862.08/455,596.80
  6. Step 6: Final answer
    x = 364,530.60

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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.