Home / 282,911.26-390,409.75-155,586.85

Finding the Fourth Proportional to 282,911.26, 390,409.75 and 155,586.85

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Solution

The fourth proportional to 282,911.26, 390,409.75 and 155,586.85 is: 214,705.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,911.26 : 390,409.75 = 155,586.85 : x
  2. Step 2: Convert to fraction form
    282,911.26/390,409.75 = 155,586.85/x
  3. Step 3: Cross multiply
    282,911.26x = 390,409.75 × 155,586.85
  4. Step 4: Simplify right side
    282,911.26x = 60,742,623,211.79
  5. Step 5: Solve for x
    x = 60,742,623,211.79/282,911.26
  6. Step 6: Final answer
    x = 214,705.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.