Home / 211,378,419.90-316,963,896.39-86,858,491.50

Finding the Fourth Proportional to 211,378,419.90, 316,963,896.39 and 86,858,491.50

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Solution

The fourth proportional to 211,378,419.90, 316,963,896.39 and 86,858,491.50 is: 130,245,111.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,378,419.90 : 316,963,896.39 = 86,858,491.50 : x
  2. Step 2: Convert to fraction form
    211,378,419.90/316,963,896.39 = 86,858,491.50/x
  3. Step 3: Cross multiply
    211,378,419.90x = 316,963,896.39 × 86,858,491.50
  4. Step 4: Simplify right side
    211,378,419.90x = 27,531,005,900,397,696
  5. Step 5: Solve for x
    x = 27,531,005,900,397,696/211,378,419.90
  6. Step 6: Final answer
    x = 130,245,111.65

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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.