Home / 278,121.90-383,805.99-157,263.18

Finding the Fourth Proportional to 278,121.90, 383,805.99 and 157,263.18

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Solution

The fourth proportional to 278,121.90, 383,805.99 and 157,263.18 is: 217,021.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,121.90 : 383,805.99 = 157,263.18 : x
  2. Step 2: Convert to fraction form
    278,121.90/383,805.99 = 157,263.18/x
  3. Step 3: Cross multiply
    278,121.90x = 383,805.99 × 157,263.18
  4. Step 4: Simplify right side
    278,121.90x = 60,358,550,490.45
  5. Step 5: Solve for x
    x = 60,358,550,490.45/278,121.90
  6. Step 6: Final answer
    x = 217,021.93

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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.