Home / 200,213,090.80-300,319,636.20-145,368,379.60

Finding the Fourth Proportional to 200,213,090.80, 300,319,636.20 and 145,368,379.60

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Solution

The fourth proportional to 200,213,090.80, 300,319,636.20 and 145,368,379.60 is: 218,052,569.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,213,090.80 : 300,319,636.20 = 145,368,379.60 : x
  2. Step 2: Convert to fraction form
    200,213,090.80/300,319,636.20 = 145,368,379.60/x
  3. Step 3: Cross multiply
    200,213,090.80x = 300,319,636.20 × 145,368,379.60
  4. Step 4: Simplify right side
    200,213,090.80x = 43,656,978,876,455,496
  5. Step 5: Solve for x
    x = 43,656,978,876,455,496/200,213,090.80
  6. Step 6: Final answer
    x = 218,052,569.40

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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.