Home / 235,328.09-353,034.45-85,778.19

Finding the Fourth Proportional to 235,328.09, 353,034.45 and 85,778.19

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Solution

The fourth proportional to 235,328.09, 353,034.45 and 85,778.19 is: 128,682.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,328.09 : 353,034.45 = 85,778.19 : x
  2. Step 2: Convert to fraction form
    235,328.09/353,034.45 = 85,778.19/x
  3. Step 3: Cross multiply
    235,328.09x = 353,034.45 × 85,778.19
  4. Step 4: Simplify right side
    235,328.09x = 30,282,656,128.65
  5. Step 5: Solve for x
    x = 30,282,656,128.65/235,328.09
  6. Step 6: Final answer
    x = 128,682.71

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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.