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Finding the Fourth Proportional to 304,785.69, 420,809.76 and 190,238.82

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Solution

The fourth proportional to 304,785.69, 420,809.76 and 190,238.82 is: 262,657.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,785.69 : 420,809.76 = 190,238.82 : x
  2. Step 2: Convert to fraction form
    304,785.69/420,809.76 = 190,238.82/x
  3. Step 3: Cross multiply
    304,785.69x = 420,809.76 × 190,238.82
  4. Step 4: Simplify right side
    304,785.69x = 80,054,352,186.88
  5. Step 5: Solve for x
    x = 80,054,352,186.88/304,785.69
  6. Step 6: Final answer
    x = 262,657.84

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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.