Home / 305,557.20-421,746.44-208,800.22

Finding the Fourth Proportional to 305,557.20, 421,746.44 and 208,800.22

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Solution

The fourth proportional to 305,557.20, 421,746.44 and 208,800.22 is: 288,197.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,557.20 : 421,746.44 = 208,800.22 : x
  2. Step 2: Convert to fraction form
    305,557.20/421,746.44 = 208,800.22/x
  3. Step 3: Cross multiply
    305,557.20x = 421,746.44 × 208,800.22
  4. Step 4: Simplify right side
    305,557.20x = 88,060,749,456.22
  5. Step 5: Solve for x
    x = 88,060,749,456.22/305,557.20
  6. Step 6: Final answer
    x = 288,197.27

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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.