Home / 420,982.66-631,573.59-136,672.66

Finding the Fourth Proportional to 420,982.66, 631,573.59 and 136,672.66

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Solution

The fourth proportional to 420,982.66, 631,573.59 and 136,672.66 is: 205,041.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,982.66 : 631,573.59 = 136,672.66 : x
  2. Step 2: Convert to fraction form
    420,982.66/631,573.59 = 136,672.66/x
  3. Step 3: Cross multiply
    420,982.66x = 631,573.59 × 136,672.66
  4. Step 4: Simplify right side
    420,982.66x = 86,318,842,531.05
  5. Step 5: Solve for x
    x = 86,318,842,531.05/420,982.66
  6. Step 6: Final answer
    x = 205,041.33

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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.