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Finding the Fourth Proportional to 305,728.80, 458,636.40 and 95,344.80

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Solution

The fourth proportional to 305,728.80, 458,636.40 and 95,344.80 is: 143,030.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,728.80 : 458,636.40 = 95,344.80 : x
  2. Step 2: Convert to fraction form
    305,728.80/458,636.40 = 95,344.80/x
  3. Step 3: Cross multiply
    305,728.80x = 458,636.40 × 95,344.80
  4. Step 4: Simplify right side
    305,728.80x = 43,728,595,830.72
  5. Step 5: Solve for x
    x = 43,728,595,830.72/305,728.80
  6. Step 6: Final answer
    x = 143,030.67

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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.