Home / 278,669.16-384,555.33-157,809.60

Finding the Fourth Proportional to 278,669.16, 384,555.33 and 157,809.60

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Solution

The fourth proportional to 278,669.16, 384,555.33 and 157,809.60 is: 217,772.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,669.16 : 384,555.33 = 157,809.60 : x
  2. Step 2: Convert to fraction form
    278,669.16/384,555.33 = 157,809.60/x
  3. Step 3: Cross multiply
    278,669.16x = 384,555.33 × 157,809.60
  4. Step 4: Simplify right side
    278,669.16x = 60,686,522,805.17
  5. Step 5: Solve for x
    x = 60,686,522,805.17/278,669.16
  6. Step 6: Final answer
    x = 217,772.65

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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.