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Finding the Fourth Proportional to 464,330.95, 640,540.78 and 303,280.27

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Solution

The fourth proportional to 464,330.95, 640,540.78 and 303,280.27 is: 418,372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,330.95 : 640,540.78 = 303,280.27 : x
  2. Step 2: Convert to fraction form
    464,330.95/640,540.78 = 303,280.27/x
  3. Step 3: Cross multiply
    464,330.95x = 640,540.78 × 303,280.27
  4. Step 4: Simplify right side
    464,330.95x = 194,263,378,344.86
  5. Step 5: Solve for x
    x = 194,263,378,344.86/464,330.95
  6. Step 6: Final answer
    x = 418,372.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.