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Finding the Fourth Proportional to 280,825.24, 421,611.54 and 147,798.92

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Solution

The fourth proportional to 280,825.24, 421,611.54 and 147,798.92 is: 221,895.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,825.24 : 421,611.54 = 147,798.92 : x
  2. Step 2: Convert to fraction form
    280,825.24/421,611.54 = 147,798.92/x
  3. Step 3: Cross multiply
    280,825.24x = 421,611.54 × 147,798.92
  4. Step 4: Simplify right side
    280,825.24x = 62,313,730,271.54
  5. Step 5: Solve for x
    x = 62,313,730,271.54/280,825.24
  6. Step 6: Final answer
    x = 221,895.05

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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.