Home / 214,907,159.40-321,616,721.70-128,707,429.20

Finding the Fourth Proportional to 214,907,159.40, 321,616,721.70 and 128,707,429.20

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Solution

The fourth proportional to 214,907,159.40, 321,616,721.70 and 128,707,429.20 is: 192,615,553.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,907,159.40 : 321,616,721.70 = 128,707,429.20 : x
  2. Step 2: Convert to fraction form
    214,907,159.40/321,616,721.70 = 128,707,429.20/x
  3. Step 3: Cross multiply
    214,907,159.40x = 321,616,721.70 × 128,707,429.20
  4. Step 4: Simplify right side
    214,907,159.40x = 41,394,461,437,738,856
  5. Step 5: Solve for x
    x = 41,394,461,437,738,856/214,907,159.40
  6. Step 6: Final answer
    x = 192,615,553.40

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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.