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Finding the Fourth Proportional to 328,388.26, 492,656.18 and 103,762.16

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Solution

The fourth proportional to 328,388.26, 492,656.18 and 103,762.16 is: 155,666.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,388.26 : 492,656.18 = 103,762.16 : x
  2. Step 2: Convert to fraction form
    328,388.26/492,656.18 = 103,762.16/x
  3. Step 3: Cross multiply
    328,388.26x = 492,656.18 × 103,762.16
  4. Step 4: Simplify right side
    328,388.26x = 51,119,069,374.15
  5. Step 5: Solve for x
    x = 51,119,069,374.15/328,388.26
  6. Step 6: Final answer
    x = 155,666.56

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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.