Home / 280,822.80-421,234.20-247,607.74

Finding the Fourth Proportional to 280,822.80, 421,234.20 and 247,607.74

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Solution

The fourth proportional to 280,822.80, 421,234.20 and 247,607.74 is: 371,411.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,822.80 : 421,234.20 = 247,607.74 : x
  2. Step 2: Convert to fraction form
    280,822.80/421,234.20 = 247,607.74/x
  3. Step 3: Cross multiply
    280,822.80x = 421,234.20 × 247,607.74
  4. Step 4: Simplify right side
    280,822.80x = 104,300,847,219.62
  5. Step 5: Solve for x
    x = 104,300,847,219.62/280,822.80
  6. Step 6: Final answer
    x = 371,411.61

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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.