Home / 423,209.79-634,992.75-263,419.37

Finding the Fourth Proportional to 423,209.79, 634,992.75 and 263,419.37

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Solution

The fourth proportional to 423,209.79, 634,992.75 and 263,419.37 is: 395,239.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,209.79 : 634,992.75 = 263,419.37 : x
  2. Step 2: Convert to fraction form
    423,209.79/634,992.75 = 263,419.37/x
  3. Step 3: Cross multiply
    423,209.79x = 634,992.75 × 263,419.37
  4. Step 4: Simplify right side
    423,209.79x = 167,269,390,159.57
  5. Step 5: Solve for x
    x = 167,269,390,159.57/423,209.79
  6. Step 6: Final answer
    x = 395,239.89

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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.