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Finding the Fourth Proportional to 289,303.99, 434,025.27 and 120,730.55

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Solution

The fourth proportional to 289,303.99, 434,025.27 and 120,730.55 is: 181,124.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,303.99 : 434,025.27 = 120,730.55 : x
  2. Step 2: Convert to fraction form
    289,303.99/434,025.27 = 120,730.55/x
  3. Step 3: Cross multiply
    289,303.99x = 434,025.27 × 120,730.55
  4. Step 4: Simplify right side
    289,303.99x = 52,400,107,390.87
  5. Step 5: Solve for x
    x = 52,400,107,390.87/289,303.99
  6. Step 6: Final answer
    x = 181,124.73

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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.