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Finding the Fourth Proportional to 307,401.20, 461,101.80 and 207,017.90

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Solution

The fourth proportional to 307,401.20, 461,101.80 and 207,017.90 is: 310,526.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,401.20 : 461,101.80 = 207,017.90 : x
  2. Step 2: Convert to fraction form
    307,401.20/461,101.80 = 207,017.90/x
  3. Step 3: Cross multiply
    307,401.20x = 461,101.80 × 207,017.90
  4. Step 4: Simplify right side
    307,401.20x = 95,456,326,322.22
  5. Step 5: Solve for x
    x = 95,456,326,322.22/307,401.20
  6. Step 6: Final answer
    x = 310,526.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.