Home / 278,087.16-383,731.56-170,661.72

Finding the Fourth Proportional to 278,087.16, 383,731.56 and 170,661.72

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Solution

The fourth proportional to 278,087.16, 383,731.56 and 170,661.72 is: 235,495.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,087.16 : 383,731.56 = 170,661.72 : x
  2. Step 2: Convert to fraction form
    278,087.16/383,731.56 = 170,661.72/x
  3. Step 3: Cross multiply
    278,087.16x = 383,731.56 × 170,661.72
  4. Step 4: Simplify right side
    278,087.16x = 65,488,288,047.88
  5. Step 5: Solve for x
    x = 65,488,288,047.88/278,087.16
  6. Step 6: Final answer
    x = 235,495.55

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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.