Home / 328,557.43-493,043.46-128,872.50

Finding the Fourth Proportional to 328,557.43, 493,043.46 and 128,872.50

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Solution

The fourth proportional to 328,557.43, 493,043.46 and 128,872.50 is: 193,390.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,557.43 : 493,043.46 = 128,872.50 : x
  2. Step 2: Convert to fraction form
    328,557.43/493,043.46 = 128,872.50/x
  3. Step 3: Cross multiply
    328,557.43x = 493,043.46 × 128,872.50
  4. Step 4: Simplify right side
    328,557.43x = 63,539,743,298.85
  5. Step 5: Solve for x
    x = 63,539,743,298.85/328,557.43
  6. Step 6: Final answer
    x = 193,390.07

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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.