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Finding the Fourth Proportional to 613,171.90, 919,903.65 and 258,003.10

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Solution

The fourth proportional to 613,171.90, 919,903.65 and 258,003.10 is: 387,066.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,171.90 : 919,903.65 = 258,003.10 : x
  2. Step 2: Convert to fraction form
    613,171.90/919,903.65 = 258,003.10/x
  3. Step 3: Cross multiply
    613,171.90x = 919,903.65 × 258,003.10
  4. Step 4: Simplify right side
    613,171.90x = 237,337,993,401.32
  5. Step 5: Solve for x
    x = 237,337,993,401.32/613,171.90
  6. Step 6: Final answer
    x = 387,066.00

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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.