Home / 328,556.43-493,041.96-128,871.50

Finding the Fourth Proportional to 328,556.43, 493,041.96 and 128,871.50

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Solution

The fourth proportional to 328,556.43, 493,041.96 and 128,871.50 is: 193,388.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,556.43 : 493,041.96 = 128,871.50 : x
  2. Step 2: Convert to fraction form
    328,556.43/493,041.96 = 128,871.50/x
  3. Step 3: Cross multiply
    328,556.43x = 493,041.96 × 128,871.50
  4. Step 4: Simplify right side
    328,556.43x = 63,539,054,482.93
  5. Step 5: Solve for x
    x = 63,539,054,482.93/328,556.43
  6. Step 6: Final answer
    x = 193,388.56

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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.