Home / 286,036.06-428,887.23-86,296.54

Finding the Fourth Proportional to 286,036.06, 428,887.23 and 86,296.54

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Solution

The fourth proportional to 286,036.06, 428,887.23 and 86,296.54 is: 129,394.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,036.06 : 428,887.23 = 86,296.54 : x
  2. Step 2: Convert to fraction form
    286,036.06/428,887.23 = 86,296.54/x
  3. Step 3: Cross multiply
    286,036.06x = 428,887.23 × 86,296.54
  4. Step 4: Simplify right side
    286,036.06x = 37,011,483,999.18
  5. Step 5: Solve for x
    x = 37,011,483,999.18/286,036.06
  6. Step 6: Final answer
    x = 129,394.47

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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.