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Finding the Fourth Proportional to 280,147.99, 386,622.49 and 159,300.52

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Solution

The fourth proportional to 280,147.99, 386,622.49 and 159,300.52 is: 219,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,147.99 : 386,622.49 = 159,300.52 : x
  2. Step 2: Convert to fraction form
    280,147.99/386,622.49 = 159,300.52/x
  3. Step 3: Cross multiply
    280,147.99x = 386,622.49 × 159,300.52
  4. Step 4: Simplify right side
    280,147.99x = 61,589,163,700.69
  5. Step 5: Solve for x
    x = 61,589,163,700.69/280,147.99
  6. Step 6: Final answer
    x = 219,845.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.