Home / 278,564.51-384,428.22-157,703.33

Finding the Fourth Proportional to 278,564.51, 384,428.22 and 157,703.33

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Solution

The fourth proportional to 278,564.51, 384,428.22 and 157,703.33 is: 217,635.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,564.51 : 384,428.22 = 157,703.33 : x
  2. Step 2: Convert to fraction form
    278,564.51/384,428.22 = 157,703.33/x
  3. Step 3: Cross multiply
    278,564.51x = 384,428.22 × 157,703.33
  4. Step 4: Simplify right side
    278,564.51x = 60,625,610,439.97
  5. Step 5: Solve for x
    x = 60,625,610,439.97/278,564.51
  6. Step 6: Final answer
    x = 217,635.80

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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.