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Finding the Fourth Proportional to 280,035,620.40, 420,053,430.60 and 241,740,375.60

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Solution

The fourth proportional to 280,035,620.40, 420,053,430.60 and 241,740,375.60 is: 362,610,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,035,620.40 : 420,053,430.60 = 241,740,375.60 : x
  2. Step 2: Convert to fraction form
    280,035,620.40/420,053,430.60 = 241,740,375.60/x
  3. Step 3: Cross multiply
    280,035,620.40x = 420,053,430.60 × 241,740,375.60
  4. Step 4: Simplify right side
    280,035,620.40x = 101,543,874,085,312,544
  5. Step 5: Solve for x
    x = 101,543,874,085,312,544/280,035,620.40
  6. Step 6: Final answer
    x = 362,610,563.40

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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.