Home / 280,120,200.40-420,180,300.60-183,374,318.80

Finding the Fourth Proportional to 280,120,200.40, 420,180,300.60 and 183,374,318.80

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Solution

The fourth proportional to 280,120,200.40, 420,180,300.60 and 183,374,318.80 is: 275,061,478.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,120,200.40 : 420,180,300.60 = 183,374,318.80 : x
  2. Step 2: Convert to fraction form
    280,120,200.40/420,180,300.60 = 183,374,318.80/x
  3. Step 3: Cross multiply
    280,120,200.40x = 420,180,300.60 × 183,374,318.80
  4. Step 4: Simplify right side
    280,120,200.40x = 77,050,276,395,704,240
  5. Step 5: Solve for x
    x = 77,050,276,395,704,240/280,120,200.40
  6. Step 6: Final answer
    x = 275,061,478.20

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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.