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Finding the Fourth Proportional to 403,368.12, 605,030.28 and 122,863.56

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Solution

The fourth proportional to 403,368.12, 605,030.28 and 122,863.56 is: 184,288.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,368.12 : 605,030.28 = 122,863.56 : x
  2. Step 2: Convert to fraction form
    403,368.12/605,030.28 = 122,863.56/x
  3. Step 3: Cross multiply
    403,368.12x = 605,030.28 × 122,863.56
  4. Step 4: Simplify right side
    403,368.12x = 74,336,174,108.60
  5. Step 5: Solve for x
    x = 74,336,174,108.60/403,368.12
  6. Step 6: Final answer
    x = 184,288.67

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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.