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Finding the Fourth Proportional to 366,978.60, 550,467.90 and 338,110.20

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Solution

The fourth proportional to 366,978.60, 550,467.90 and 338,110.20 is: 507,165.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,978.60 : 550,467.90 = 338,110.20 : x
  2. Step 2: Convert to fraction form
    366,978.60/550,467.90 = 338,110.20/x
  3. Step 3: Cross multiply
    366,978.60x = 550,467.90 × 338,110.20
  4. Step 4: Simplify right side
    366,978.60x = 186,118,811,762.58
  5. Step 5: Solve for x
    x = 186,118,811,762.58/366,978.60
  6. Step 6: Final answer
    x = 507,165.30

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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.