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Finding the Fourth Proportional to 280,763.76, 421,025.76 and 162,516.72

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Solution

The fourth proportional to 280,763.76, 421,025.76 and 162,516.72 is: 243,705.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,763.76 : 421,025.76 = 162,516.72 : x
  2. Step 2: Convert to fraction form
    280,763.76/421,025.76 = 162,516.72/x
  3. Step 3: Cross multiply
    280,763.76x = 421,025.76 × 162,516.72
  4. Step 4: Simplify right side
    280,763.76x = 68,423,725,550.71
  5. Step 5: Solve for x
    x = 68,423,725,550.71/280,763.76
  6. Step 6: Final answer
    x = 243,705.69

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1.5x scale

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.