Home / 280,014.10-419,972.55-102,429.70

Finding the Fourth Proportional to 280,014.10, 419,972.55 and 102,429.70

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Solution

The fourth proportional to 280,014.10, 419,972.55 and 102,429.70 is: 153,626.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,014.10 : 419,972.55 = 102,429.70 : x
  2. Step 2: Convert to fraction form
    280,014.10/419,972.55 = 102,429.70/x
  3. Step 3: Cross multiply
    280,014.10x = 419,972.55 × 102,429.70
  4. Step 4: Simplify right side
    280,014.10x = 43,017,662,304.74
  5. Step 5: Solve for x
    x = 43,017,662,304.74/280,014.10
  6. Step 6: Final answer
    x = 153,626.77

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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.