Home / 401,553.09-602,385.21-135,389.75

Finding the Fourth Proportional to 401,553.09, 602,385.21 and 135,389.75

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Solution

The fourth proportional to 401,553.09, 602,385.21 and 135,389.75 is: 203,103.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,553.09 : 602,385.21 = 135,389.75 : x
  2. Step 2: Convert to fraction form
    401,553.09/602,385.21 = 135,389.75/x
  3. Step 3: Cross multiply
    401,553.09x = 602,385.21 × 135,389.75
  4. Step 4: Simplify right side
    401,553.09x = 81,556,779,973.67
  5. Step 5: Solve for x
    x = 81,556,779,973.67/401,553.09
  6. Step 6: Final answer
    x = 203,103.36

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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.