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Finding the Fourth Proportional to 366,420.80, 549,631.20 and 329,679.20

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Solution

The fourth proportional to 366,420.80, 549,631.20 and 329,679.20 is: 494,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,420.80 : 549,631.20 = 329,679.20 : x
  2. Step 2: Convert to fraction form
    366,420.80/549,631.20 = 329,679.20/x
  3. Step 3: Cross multiply
    366,420.80x = 549,631.20 × 329,679.20
  4. Step 4: Simplify right side
    366,420.80x = 181,201,974,311.04
  5. Step 5: Solve for x
    x = 181,201,974,311.04/366,420.80
  6. Step 6: Final answer
    x = 494,518.80

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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.