Home / 211,821.78-317,578.80-99,444.18

Finding the Fourth Proportional to 211,821.78, 317,578.80 and 99,444.18

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Solution

The fourth proportional to 211,821.78, 317,578.80 and 99,444.18 is: 149,094.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,821.78 : 317,578.80 = 99,444.18 : x
  2. Step 2: Convert to fraction form
    211,821.78/317,578.80 = 99,444.18/x
  3. Step 3: Cross multiply
    211,821.78x = 317,578.80 × 99,444.18
  4. Step 4: Simplify right side
    211,821.78x = 31,581,363,351.38
  5. Step 5: Solve for x
    x = 31,581,363,351.38/211,821.78
  6. Step 6: Final answer
    x = 149,094.03

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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.