Home / 211,918.17-317,877.41-133,087.76

Finding the Fourth Proportional to 211,918.17, 317,877.41 and 133,087.76

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Solution

The fourth proportional to 211,918.17, 317,877.41 and 133,087.76 is: 199,631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,918.17 : 317,877.41 = 133,087.76 : x
  2. Step 2: Convert to fraction form
    211,918.17/317,877.41 = 133,087.76/x
  3. Step 3: Cross multiply
    211,918.17x = 317,877.41 × 133,087.76
  4. Step 4: Simplify right side
    211,918.17x = 42,305,592,386.87
  5. Step 5: Solve for x
    x = 42,305,592,386.87/211,918.17
  6. Step 6: Final answer
    x = 199,631.73

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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.