Home / 349,819.07-522,000.35-312,120.05

Finding the Fourth Proportional to 349,819.07, 522,000.35 and 312,120.05

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Solution

The fourth proportional to 349,819.07, 522,000.35 and 312,120.05 is: 465,745.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,819.07 : 522,000.35 = 312,120.05 : x
  2. Step 2: Convert to fraction form
    349,819.07/522,000.35 = 312,120.05/x
  3. Step 3: Cross multiply
    349,819.07x = 522,000.35 × 312,120.05
  4. Step 4: Simplify right side
    349,819.07x = 162,926,775,086.42
  5. Step 5: Solve for x
    x = 162,926,775,086.42/349,819.07
  6. Step 6: Final answer
    x = 465,745.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.