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Finding the Fourth Proportional to 315,070.20, 472,173.30 and 202,404.60

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Solution

The fourth proportional to 315,070.20, 472,173.30 and 202,404.60 is: 303,329.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,070.20 : 472,173.30 = 202,404.60 : x
  2. Step 2: Convert to fraction form
    315,070.20/472,173.30 = 202,404.60/x
  3. Step 3: Cross multiply
    315,070.20x = 472,173.30 × 202,404.60
  4. Step 4: Simplify right side
    315,070.20x = 95,570,047,917.18
  5. Step 5: Solve for x
    x = 95,570,047,917.18/315,070.20
  6. Step 6: Final answer
    x = 303,329.38

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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.