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Finding the Fourth Proportional to 486,114.40, 729,171.60 and 308,748.70

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Solution

The fourth proportional to 486,114.40, 729,171.60 and 308,748.70 is: 463,123.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,114.40 : 729,171.60 = 308,748.70 : x
  2. Step 2: Convert to fraction form
    486,114.40/729,171.60 = 308,748.70/x
  3. Step 3: Cross multiply
    486,114.40x = 729,171.60 × 308,748.70
  4. Step 4: Simplify right side
    486,114.40x = 225,130,783,576.92
  5. Step 5: Solve for x
    x = 225,130,783,576.92/486,114.40
  6. Step 6: Final answer
    x = 463,123.05

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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.