Home / 421,036.20-581,287.37-274,001.15

Finding the Fourth Proportional to 421,036.20, 581,287.37 and 274,001.15

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Solution

The fourth proportional to 421,036.20, 581,287.37 and 274,001.15 is: 378,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,036.20 : 581,287.37 = 274,001.15 : x
  2. Step 2: Convert to fraction form
    421,036.20/581,287.37 = 274,001.15/x
  3. Step 3: Cross multiply
    421,036.20x = 581,287.37 × 274,001.15
  4. Step 4: Simplify right side
    421,036.20x = 159,273,403,584.03
  5. Step 5: Solve for x
    x = 159,273,403,584.03/421,036.20
  6. Step 6: Final answer
    x = 378,289.10

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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.