Home / 215,007.59-322,386.75-72,805.40

Finding the Fourth Proportional to 215,007.59, 322,386.75 and 72,805.40

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Solution

The fourth proportional to 215,007.59, 322,386.75 and 72,805.40 is: 109,165.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,007.59 : 322,386.75 = 72,805.40 : x
  2. Step 2: Convert to fraction form
    215,007.59/322,386.75 = 72,805.40/x
  3. Step 3: Cross multiply
    215,007.59x = 322,386.75 × 72,805.40
  4. Step 4: Simplify right side
    215,007.59x = 23,471,494,676.52
  5. Step 5: Solve for x
    x = 23,471,494,676.52/215,007.59
  6. Step 6: Final answer
    x = 109,165.89

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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.