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Finding the Fourth Proportional to 455,528.60, 683,276.70 and 206,210.60

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Solution

The fourth proportional to 455,528.60, 683,276.70 and 206,210.60 is: 309,308.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,528.60 : 683,276.70 = 206,210.60 : x
  2. Step 2: Convert to fraction form
    455,528.60/683,276.70 = 206,210.60/x
  3. Step 3: Cross multiply
    455,528.60x = 683,276.70 × 206,210.60
  4. Step 4: Simplify right side
    455,528.60x = 140,898,898,273.02
  5. Step 5: Solve for x
    x = 140,898,898,273.02/455,528.60
  6. Step 6: Final answer
    x = 309,308.57

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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.