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Finding the Fourth Proportional to 328,355.76, 492,561.60 and 103,656.12

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Solution

The fourth proportional to 328,355.76, 492,561.60 and 103,656.12 is: 155,493.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,355.76 : 492,561.60 = 103,656.12 : x
  2. Step 2: Convert to fraction form
    328,355.76/492,561.60 = 103,656.12/x
  3. Step 3: Cross multiply
    328,355.76x = 492,561.60 × 103,656.12
  4. Step 4: Simplify right side
    328,355.76x = 51,057,024,316.99
  5. Step 5: Solve for x
    x = 51,057,024,316.99/328,355.76
  6. Step 6: Final answer
    x = 155,493.01

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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.