Home / 280,373,918.70-420,560,878.05-98,597,477.10

Finding the Fourth Proportional to 280,373,918.70, 420,560,878.05 and 98,597,477.10

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Solution

The fourth proportional to 280,373,918.70, 420,560,878.05 and 98,597,477.10 is: 147,896,215.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,373,918.70 : 420,560,878.05 = 98,597,477.10 : x
  2. Step 2: Convert to fraction form
    280,373,918.70/420,560,878.05 = 98,597,477.10/x
  3. Step 3: Cross multiply
    280,373,918.70x = 420,560,878.05 × 98,597,477.10
  4. Step 4: Simplify right side
    280,373,918.70x = 41,466,241,542,690,768
  5. Step 5: Solve for x
    x = 41,466,241,542,690,768/280,373,918.70
  6. Step 6: Final answer
    x = 147,896,215.65

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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.