Home / 305,400.56-457,879.35-205,312.46

Finding the Fourth Proportional to 305,400.56, 457,879.35 and 205,312.46

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Solution

The fourth proportional to 305,400.56, 457,879.35 and 205,312.46 is: 307,819.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,400.56 : 457,879.35 = 205,312.46 : x
  2. Step 2: Convert to fraction form
    305,400.56/457,879.35 = 205,312.46/x
  3. Step 3: Cross multiply
    305,400.56x = 457,879.35 × 205,312.46
  4. Step 4: Simplify right side
    305,400.56x = 94,008,335,731.70
  5. Step 5: Solve for x
    x = 94,008,335,731.70/305,400.56
  6. Step 6: Final answer
    x = 307,819.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.