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Finding the Fourth Proportional to 328,535.04, 492,990.48 and 128,873.28

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Solution

The fourth proportional to 328,535.04, 492,990.48 and 128,873.28 is: 193,383.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,535.04 : 492,990.48 = 128,873.28 : x
  2. Step 2: Convert to fraction form
    328,535.04/492,990.48 = 128,873.28/x
  3. Step 3: Cross multiply
    328,535.04x = 492,990.48 × 128,873.28
  4. Step 4: Simplify right side
    328,535.04x = 63,533,300,166.37
  5. Step 5: Solve for x
    x = 63,533,300,166.37/328,535.04
  6. Step 6: Final answer
    x = 193,383.63

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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.