Home / 280,836,015.90-420,687,153.45-280,836,015.90

Finding the Fourth Proportional to 280,836,015.90, 420,687,153.45 and 280,836,015.90

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Solution

The fourth proportional to 280,836,015.90, 420,687,153.45 and 280,836,015.90 is: 420,687,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,836,015.90 : 420,687,153.45 = 280,836,015.90 : x
  2. Step 2: Convert to fraction form
    280,836,015.90/420,687,153.45 = 280,836,015.90/x
  3. Step 3: Cross multiply
    280,836,015.90x = 420,687,153.45 × 280,836,015.90
  4. Step 4: Simplify right side
    280,836,015.90x = 118,144,104,115,209,920
  5. Step 5: Solve for x
    x = 118,144,104,115,209,920/280,836,015.90
  6. Step 6: Final answer
    x = 420,687,153.45

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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.