Home / 280,173,540.40-420,260,310.60-98,420,718.40

Finding the Fourth Proportional to 280,173,540.40, 420,260,310.60 and 98,420,718.40

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Solution

The fourth proportional to 280,173,540.40, 420,260,310.60 and 98,420,718.40 is: 147,631,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,173,540.40 : 420,260,310.60 = 98,420,718.40 : x
  2. Step 2: Convert to fraction form
    280,173,540.40/420,260,310.60 = 98,420,718.40/x
  3. Step 3: Cross multiply
    280,173,540.40x = 420,260,310.60 × 98,420,718.40
  4. Step 4: Simplify right side
    280,173,540.40x = 41,362,321,684,259,136
  5. Step 5: Solve for x
    x = 41,362,321,684,259,136/280,173,540.40
  6. Step 6: Final answer
    x = 147,631,077.60

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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.