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Finding the Fourth Proportional to 328,455.06, 492,682.59 and 117,978.18

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Solution

The fourth proportional to 328,455.06, 492,682.59 and 117,978.18 is: 176,967.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,455.06 : 492,682.59 = 117,978.18 : x
  2. Step 2: Convert to fraction form
    328,455.06/492,682.59 = 117,978.18/x
  3. Step 3: Cross multiply
    328,455.06x = 492,682.59 × 117,978.18
  4. Step 4: Simplify right side
    328,455.06x = 58,125,795,285.89
  5. Step 5: Solve for x
    x = 58,125,795,285.89/328,455.06
  6. Step 6: Final answer
    x = 176,967.27

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Similar ratio
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1.5x scale

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.