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Finding the Fourth Proportional to 310,412.54, 465,544.95 and 85,768.05

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Solution

The fourth proportional to 310,412.54, 465,544.95 and 85,768.05 is: 128,631.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,412.54 : 465,544.95 = 85,768.05 : x
  2. Step 2: Convert to fraction form
    310,412.54/465,544.95 = 85,768.05/x
  3. Step 3: Cross multiply
    310,412.54x = 465,544.95 × 85,768.05
  4. Step 4: Simplify right side
    310,412.54x = 39,928,882,548.85
  5. Step 5: Solve for x
    x = 39,928,882,548.85/310,412.54
  6. Step 6: Final answer
    x = 128,631.67

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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.