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Finding the Fourth Proportional to 262,109.69, 393,064.89 and 84,590.09

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Solution

The fourth proportional to 262,109.69, 393,064.89 and 84,590.09 is: 126,852.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,109.69 : 393,064.89 = 84,590.09 : x
  2. Step 2: Convert to fraction form
    262,109.69/393,064.89 = 84,590.09/x
  3. Step 3: Cross multiply
    262,109.69x = 393,064.89 × 84,590.09
  4. Step 4: Simplify right side
    262,109.69x = 33,249,392,455.62
  5. Step 5: Solve for x
    x = 33,249,392,455.62/262,109.69
  6. Step 6: Final answer
    x = 126,852.97

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1.5x scale

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.