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Finding the Fourth Proportional to 328,356.52, 492,562.73 and 103,656.85

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Solution

The fourth proportional to 328,356.52, 492,562.73 and 103,656.85 is: 155,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,356.52 : 492,562.73 = 103,656.85 : x
  2. Step 2: Convert to fraction form
    328,356.52/492,562.73 = 103,656.85/x
  3. Step 3: Cross multiply
    328,356.52x = 492,562.73 × 103,656.85
  4. Step 4: Simplify right side
    328,356.52x = 51,057,501,019.20
  5. Step 5: Solve for x
    x = 51,057,501,019.20/328,356.52
  6. Step 6: Final answer
    x = 155,494.10

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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.