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Finding the Fourth Proportional to 328,357.78, 492,564.60 and 103,658.10

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Solution

The fourth proportional to 328,357.78, 492,564.60 and 103,658.10 is: 155,495.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,357.78 : 492,564.60 = 103,658.10 : x
  2. Step 2: Convert to fraction form
    328,357.78/492,564.60 = 103,658.10/x
  3. Step 3: Cross multiply
    328,357.78x = 492,564.60 × 103,658.10
  4. Step 4: Simplify right side
    328,357.78x = 51,058,310,563.26
  5. Step 5: Solve for x
    x = 51,058,310,563.26/328,357.78
  6. Step 6: Final answer
    x = 155,495.97

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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.