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Finding the Fourth Proportional to 328,553.60, 492,858.05 and 103,909.03

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Solution

The fourth proportional to 328,553.60, 492,858.05 and 103,909.03 is: 155,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,553.60 : 492,858.05 = 103,909.03 : x
  2. Step 2: Convert to fraction form
    328,553.60/492,858.05 = 103,909.03/x
  3. Step 3: Cross multiply
    328,553.60x = 492,858.05 × 103,909.03
  4. Step 4: Simplify right side
    328,553.60x = 51,212,400,151.50
  5. Step 5: Solve for x
    x = 51,212,400,151.50/328,553.60
  6. Step 6: Final answer
    x = 155,872.29

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1.5x scale

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.