Home / 280,040,915.48-420,057,994.25-72,760,984.79

Finding the Fourth Proportional to 280,040,915.48, 420,057,994.25 and 72,760,984.79

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Solution

The fourth proportional to 280,040,915.48, 420,057,994.25 and 72,760,984.79 is: 109,140,599.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,040,915.48 : 420,057,994.25 = 72,760,984.79 : x
  2. Step 2: Convert to fraction form
    280,040,915.48/420,057,994.25 = 72,760,984.79/x
  3. Step 3: Cross multiply
    280,040,915.48x = 420,057,994.25 × 72,760,984.79
  4. Step 4: Simplify right side
    280,040,915.48x = 30,563,833,328,622,312
  5. Step 5: Solve for x
    x = 30,563,833,328,622,312/280,040,915.48
  6. Step 6: Final answer
    x = 109,140,599.25

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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.