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Finding the Fourth Proportional to 245,433.81, 368,059.56 and 85,468.67

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Solution

The fourth proportional to 245,433.81, 368,059.56 and 85,468.67 is: 128,171.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,433.81 : 368,059.56 = 85,468.67 : x
  2. Step 2: Convert to fraction form
    245,433.81/368,059.56 = 85,468.67/x
  3. Step 3: Cross multiply
    245,433.81x = 368,059.56 × 85,468.67
  4. Step 4: Simplify right side
    245,433.81x = 31,457,559,233.69
  5. Step 5: Solve for x
    x = 31,457,559,233.69/245,433.81
  6. Step 6: Final answer
    x = 128,171.25

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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.