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Finding the Fourth Proportional to 300,779.92, 415,058.40 and 164,786.80

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Solution

The fourth proportional to 300,779.92, 415,058.40 and 164,786.80 is: 227,395.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,779.92 : 415,058.40 = 164,786.80 : x
  2. Step 2: Convert to fraction form
    300,779.92/415,058.40 = 164,786.80/x
  3. Step 3: Cross multiply
    300,779.92x = 415,058.40 × 164,786.80
  4. Step 4: Simplify right side
    300,779.92x = 68,396,145,549.12
  5. Step 5: Solve for x
    x = 68,396,145,549.12/300,779.92
  6. Step 6: Final answer
    x = 227,395.98

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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.