Home / 217,790,986.80-326,592,001.80-72,168,279.60

Finding the Fourth Proportional to 217,790,986.80, 326,592,001.80 and 72,168,279.60

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Solution

The fourth proportional to 217,790,986.80, 326,592,001.80 and 72,168,279.60 is: 108,221,112.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,790,986.80 : 326,592,001.80 = 72,168,279.60 : x
  2. Step 2: Convert to fraction form
    217,790,986.80/326,592,001.80 = 72,168,279.60/x
  3. Step 3: Cross multiply
    217,790,986.80x = 326,592,001.80 × 72,168,279.60
  4. Step 4: Simplify right side
    217,790,986.80x = 23,569,582,901,026,104
  5. Step 5: Solve for x
    x = 23,569,582,901,026,104/217,790,986.80
  6. Step 6: Final answer
    x = 108,221,112.58

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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.