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Finding the Fourth Proportional to 383,139.40, 574,709.10 and 149,667.40

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Solution

The fourth proportional to 383,139.40, 574,709.10 and 149,667.40 is: 224,501.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,139.40 : 574,709.10 = 149,667.40 : x
  2. Step 2: Convert to fraction form
    383,139.40/574,709.10 = 149,667.40/x
  3. Step 3: Cross multiply
    383,139.40x = 574,709.10 × 149,667.40
  4. Step 4: Simplify right side
    383,139.40x = 86,015,216,753.34
  5. Step 5: Solve for x
    x = 86,015,216,753.34/383,139.40
  6. Step 6: Final answer
    x = 224,501.10

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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.