Home / 328,562.82-492,844.23-128,977.20

Finding the Fourth Proportional to 328,562.82, 492,844.23 and 128,977.20

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Solution

The fourth proportional to 328,562.82, 492,844.23 and 128,977.20 is: 193,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,562.82 : 492,844.23 = 128,977.20 : x
  2. Step 2: Convert to fraction form
    328,562.82/492,844.23 = 128,977.20/x
  3. Step 3: Cross multiply
    328,562.82x = 492,844.23 × 128,977.20
  4. Step 4: Simplify right side
    328,562.82x = 63,565,668,821.56
  5. Step 5: Solve for x
    x = 63,565,668,821.56/328,562.82
  6. Step 6: Final answer
    x = 193,465.80

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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.