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Finding the Fourth Proportional to 270,078.20, 405,117.30 and 169,913.60

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Solution

The fourth proportional to 270,078.20, 405,117.30 and 169,913.60 is: 254,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,078.20 : 405,117.30 = 169,913.60 : x
  2. Step 2: Convert to fraction form
    270,078.20/405,117.30 = 169,913.60/x
  3. Step 3: Cross multiply
    270,078.20x = 405,117.30 × 169,913.60
  4. Step 4: Simplify right side
    270,078.20x = 68,834,938,865.28
  5. Step 5: Solve for x
    x = 68,834,938,865.28/270,078.20
  6. Step 6: Final answer
    x = 254,870.40

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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.