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Finding the Fourth Proportional to 328,354.27, 492,559.35 and 103,654.60

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Solution

The fourth proportional to 328,354.27, 492,559.35 and 103,654.60 is: 155,490.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,354.27 : 492,559.35 = 103,654.60 : x
  2. Step 2: Convert to fraction form
    328,354.27/492,559.35 = 103,654.60/x
  3. Step 3: Cross multiply
    328,354.27x = 492,559.35 × 103,654.60
  4. Step 4: Simplify right side
    328,354.27x = 51,056,042,400.51
  5. Step 5: Solve for x
    x = 51,056,042,400.51/328,354.27
  6. Step 6: Final answer
    x = 155,490.72

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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.