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Finding the Fourth Proportional to 366,892.80, 550,019.20 and 142,406.40

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Solution

The fourth proportional to 366,892.80, 550,019.20 and 142,406.40 is: 213,485.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,892.80 : 550,019.20 = 142,406.40 : x
  2. Step 2: Convert to fraction form
    366,892.80/550,019.20 = 142,406.40/x
  3. Step 3: Cross multiply
    366,892.80x = 550,019.20 × 142,406.40
  4. Step 4: Simplify right side
    366,892.80x = 78,326,254,202.88
  5. Step 5: Solve for x
    x = 78,326,254,202.88/366,892.80
  6. Step 6: Final answer
    x = 213,485.39

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1.5x scale

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.