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Finding the Fourth Proportional to 662,665.12, 993,428.40 and 230,326.40

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Solution

The fourth proportional to 662,665.12, 993,428.40 and 230,326.40 is: 345,291.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,665.12 : 993,428.40 = 230,326.40 : x
  2. Step 2: Convert to fraction form
    662,665.12/993,428.40 = 230,326.40/x
  3. Step 3: Cross multiply
    662,665.12x = 993,428.40 × 230,326.40
  4. Step 4: Simplify right side
    662,665.12x = 228,812,787,029.76
  5. Step 5: Solve for x
    x = 228,812,787,029.76/662,665.12
  6. Step 6: Final answer
    x = 345,291.73

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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.