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Finding the Fourth Proportional to 309,453, 464,186 and 99,090.33

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Solution

The fourth proportional to 309,453, 464,186 and 99,090.33 is: 148,637.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,453 : 464,186 = 99,090.33 : x
  2. Step 2: Convert to fraction form
    309,453/464,186 = 99,090.33/x
  3. Step 3: Cross multiply
    309,453x = 464,186 × 99,090.33
  4. Step 4: Simplify right side
    309,453x = 45,996,343,921.38
  5. Step 5: Solve for x
    x = 45,996,343,921.38/309,453
  6. Step 6: Final answer
    x = 148,637.58

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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.