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Finding the Fourth Proportional to 270,500.80, 405,751.20 and 218,014.40

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Solution

The fourth proportional to 270,500.80, 405,751.20 and 218,014.40 is: 327,021.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,500.80 : 405,751.20 = 218,014.40 : x
  2. Step 2: Convert to fraction form
    270,500.80/405,751.20 = 218,014.40/x
  3. Step 3: Cross multiply
    270,500.80x = 405,751.20 × 218,014.40
  4. Step 4: Simplify right side
    270,500.80x = 88,459,604,417.28
  5. Step 5: Solve for x
    x = 88,459,604,417.28/270,500.80
  6. Step 6: Final answer
    x = 327,021.60

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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.