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Finding the Fourth Proportional to 328,111.73, 492,208.64 and 128,406.32

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Solution

The fourth proportional to 328,111.73, 492,208.64 and 128,406.32 is: 192,625.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,111.73 : 492,208.64 = 128,406.32 : x
  2. Step 2: Convert to fraction form
    328,111.73/492,208.64 = 128,406.32/x
  3. Step 3: Cross multiply
    328,111.73x = 492,208.64 × 128,406.32
  4. Step 4: Simplify right side
    328,111.73x = 63,202,699,492.57
  5. Step 5: Solve for x
    x = 63,202,699,492.57/328,111.73
  6. Step 6: Final answer
    x = 192,625.54

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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.