Home / 420,743.58-631,128.14-164,565.93

Finding the Fourth Proportional to 420,743.58, 631,128.14 and 164,565.93

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Solution

The fourth proportional to 420,743.58, 631,128.14 and 164,565.93 is: 246,853.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,743.58 : 631,128.14 = 164,565.93 : x
  2. Step 2: Convert to fraction form
    420,743.58/631,128.14 = 164,565.93/x
  3. Step 3: Cross multiply
    420,743.58x = 631,128.14 × 164,565.93
  4. Step 4: Simplify right side
    420,743.58x = 103,862,188,485.44
  5. Step 5: Solve for x
    x = 103,862,188,485.44/420,743.58
  6. Step 6: Final answer
    x = 246,853.89

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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.