Home / 209,988.36-314,782.92-133,873.20

Finding the Fourth Proportional to 209,988.36, 314,782.92 and 133,873.20

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Solution

The fourth proportional to 209,988.36, 314,782.92 and 133,873.20 is: 200,682.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,988.36 : 314,782.92 = 133,873.20 : x
  2. Step 2: Convert to fraction form
    209,988.36/314,782.92 = 133,873.20/x
  3. Step 3: Cross multiply
    209,988.36x = 314,782.92 × 133,873.20
  4. Step 4: Simplify right side
    209,988.36x = 42,140,996,805.74
  5. Step 5: Solve for x
    x = 42,140,996,805.74/209,988.36
  6. Step 6: Final answer
    x = 200,682.54

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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.