Home / 278,567.50-384,427.67-157,705.66

Finding the Fourth Proportional to 278,567.50, 384,427.67 and 157,705.66

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Solution

The fourth proportional to 278,567.50, 384,427.67 and 157,705.66 is: 217,636.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,567.50 : 384,427.67 = 157,705.66 : x
  2. Step 2: Convert to fraction form
    278,567.50/384,427.67 = 157,705.66/x
  3. Step 3: Cross multiply
    278,567.50x = 384,427.67 × 157,705.66
  4. Step 4: Simplify right side
    278,567.50x = 60,626,419,419.61
  5. Step 5: Solve for x
    x = 60,626,419,419.61/278,567.50
  6. Step 6: Final answer
    x = 217,636.37

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1.5x scale

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.