Home / 278,733.57-384,643.53-157,886.03

Finding the Fourth Proportional to 278,733.57, 384,643.53 and 157,886.03

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Solution

The fourth proportional to 278,733.57, 384,643.53 and 157,886.03 is: 217,877.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,733.57 : 384,643.53 = 157,886.03 : x
  2. Step 2: Convert to fraction form
    278,733.57/384,643.53 = 157,886.03/x
  3. Step 3: Cross multiply
    278,733.57x = 384,643.53 × 157,886.03
  4. Step 4: Simplify right side
    278,733.57x = 60,729,837,993.67
  5. Step 5: Solve for x
    x = 60,729,837,993.67/278,733.57
  6. Step 6: Final answer
    x = 217,877.73

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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.