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Finding the Fourth Proportional to 320,455.60, 480,731.22 and 118,036.29

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Solution

The fourth proportional to 320,455.60, 480,731.22 and 118,036.29 is: 177,072.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,455.60 : 480,731.22 = 118,036.29 : x
  2. Step 2: Convert to fraction form
    320,455.60/480,731.22 = 118,036.29/x
  3. Step 3: Cross multiply
    320,455.60x = 480,731.22 × 118,036.29
  4. Step 4: Simplify right side
    320,455.60x = 56,743,727,292.32
  5. Step 5: Solve for x
    x = 56,743,727,292.32/320,455.60
  6. Step 6: Final answer
    x = 177,072.04

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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.