Home / 289,310.71-433,986.85-99,768.35

Finding the Fourth Proportional to 289,310.71, 433,986.85 and 99,768.35

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Solution

The fourth proportional to 289,310.71, 433,986.85 and 99,768.35 is: 149,659.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,310.71 : 433,986.85 = 99,768.35 : x
  2. Step 2: Convert to fraction form
    289,310.71/433,986.85 = 99,768.35/x
  3. Step 3: Cross multiply
    289,310.71x = 433,986.85 × 99,768.35
  4. Step 4: Simplify right side
    289,310.71x = 43,298,149,277.42
  5. Step 5: Solve for x
    x = 43,298,149,277.42/289,310.71
  6. Step 6: Final answer
    x = 149,659.69

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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.