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Finding the Fourth Proportional to 328,115, 492,220.02 and 103,399.40

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Solution

The fourth proportional to 328,115, 492,220.02 and 103,399.40 is: 155,114.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,115 : 492,220.02 = 103,399.40 : x
  2. Step 2: Convert to fraction form
    328,115/492,220.02 = 103,399.40/x
  3. Step 3: Cross multiply
    328,115x = 492,220.02 × 103,399.40
  4. Step 4: Simplify right side
    328,115x = 50,895,254,735.99
  5. Step 5: Solve for x
    x = 50,895,254,735.99/328,115
  6. Step 6: Final answer
    x = 155,114.08

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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.