Home / 390,769.11-539,297.19-245,598.48

Finding the Fourth Proportional to 390,769.11, 539,297.19 and 245,598.48

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Solution

The fourth proportional to 390,769.11, 539,297.19 and 245,598.48 is: 338,948.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,769.11 : 539,297.19 = 245,598.48 : x
  2. Step 2: Convert to fraction form
    390,769.11/539,297.19 = 245,598.48/x
  3. Step 3: Cross multiply
    390,769.11x = 539,297.19 × 245,598.48
  4. Step 4: Simplify right side
    390,769.11x = 132,450,570,132.27
  5. Step 5: Solve for x
    x = 132,450,570,132.27/390,769.11
  6. Step 6: Final answer
    x = 338,948.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.