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Finding the Fourth Proportional to 662,384.20, 993,649.20 and 213,028.60

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Solution

The fourth proportional to 662,384.20, 993,649.20 and 213,028.60 is: 319,566.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,384.20 : 993,649.20 = 213,028.60 : x
  2. Step 2: Convert to fraction form
    662,384.20/993,649.20 = 213,028.60/x
  3. Step 3: Cross multiply
    662,384.20x = 993,649.20 × 213,028.60
  4. Step 4: Simplify right side
    662,384.20x = 211,675,697,967.12
  5. Step 5: Solve for x
    x = 211,675,697,967.12/662,384.20
  6. Step 6: Final answer
    x = 319,566.35

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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.