Home / 328,110.48-492,206.76-128,405.07

Finding the Fourth Proportional to 328,110.48, 492,206.76 and 128,405.07

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Solution

The fourth proportional to 328,110.48, 492,206.76 and 128,405.07 is: 192,623.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,110.48 : 492,206.76 = 128,405.07 : x
  2. Step 2: Convert to fraction form
    328,110.48/492,206.76 = 128,405.07/x
  3. Step 3: Cross multiply
    328,110.48x = 492,206.76 × 128,405.07
  4. Step 4: Simplify right side
    328,110.48x = 63,201,843,472.27
  5. Step 5: Solve for x
    x = 63,201,843,472.27/328,110.48
  6. Step 6: Final answer
    x = 192,623.67

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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.