Home / 280,828.90-421,245.15-112,363.30

Finding the Fourth Proportional to 280,828.90, 421,245.15 and 112,363.30

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Solution

The fourth proportional to 280,828.90, 421,245.15 and 112,363.30 is: 168,545.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,828.90 : 421,245.15 = 112,363.30 : x
  2. Step 2: Convert to fraction form
    280,828.90/421,245.15 = 112,363.30/x
  3. Step 3: Cross multiply
    280,828.90x = 421,245.15 × 112,363.30
  4. Step 4: Simplify right side
    280,828.90x = 47,332,495,163.00
  5. Step 5: Solve for x
    x = 47,332,495,163.00/280,828.90
  6. Step 6: Final answer
    x = 168,545.67

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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.