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Finding the Fourth Proportional to 403,880.64, 605,820.93 and 108,392.64

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Solution

The fourth proportional to 403,880.64, 605,820.93 and 108,392.64 is: 162,588.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,880.64 : 605,820.93 = 108,392.64 : x
  2. Step 2: Convert to fraction form
    403,880.64/605,820.93 = 108,392.64/x
  3. Step 3: Cross multiply
    403,880.64x = 605,820.93 × 108,392.64
  4. Step 4: Simplify right side
    403,880.64x = 65,666,529,969.96
  5. Step 5: Solve for x
    x = 65,666,529,969.96/403,880.64
  6. Step 6: Final answer
    x = 162,588.95

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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.