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Finding the Fourth Proportional to 320,108.64, 480,047.76 and 109,690.08

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Solution

The fourth proportional to 320,108.64, 480,047.76 and 109,690.08 is: 164,495.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,108.64 : 480,047.76 = 109,690.08 : x
  2. Step 2: Convert to fraction form
    320,108.64/480,047.76 = 109,690.08/x
  3. Step 3: Cross multiply
    320,108.64x = 480,047.76 × 109,690.08
  4. Step 4: Simplify right side
    320,108.64x = 52,656,477,198.22
  5. Step 5: Solve for x
    x = 52,656,477,198.22/320,108.64
  6. Step 6: Final answer
    x = 164,495.64

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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.