Home / 278,765.40-384,653.16-164,101.80

Finding the Fourth Proportional to 278,765.40, 384,653.16 and 164,101.80

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Solution

The fourth proportional to 278,765.40, 384,653.16 and 164,101.80 is: 226,435.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,765.40 : 384,653.16 = 164,101.80 : x
  2. Step 2: Convert to fraction form
    278,765.40/384,653.16 = 164,101.80/x
  3. Step 3: Cross multiply
    278,765.40x = 384,653.16 × 164,101.80
  4. Step 4: Simplify right side
    278,765.40x = 63,122,275,931.69
  5. Step 5: Solve for x
    x = 63,122,275,931.69/278,765.40
  6. Step 6: Final answer
    x = 226,435.12

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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.