Home / 282,939.70-390,453.69-155,617.06

Finding the Fourth Proportional to 282,939.70, 390,453.69 and 155,617.06

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Solution

The fourth proportional to 282,939.70, 390,453.69 and 155,617.06 is: 214,749.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,939.70 : 390,453.69 = 155,617.06 : x
  2. Step 2: Convert to fraction form
    282,939.70/390,453.69 = 155,617.06/x
  3. Step 3: Cross multiply
    282,939.70x = 390,453.69 × 155,617.06
  4. Step 4: Simplify right side
    282,939.70x = 60,761,255,303.95
  5. Step 5: Solve for x
    x = 60,761,255,303.95/282,939.70
  6. Step 6: Final answer
    x = 214,749.84

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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.