Home / 245,721.11-339,106.03-138,298.10

Finding the Fourth Proportional to 245,721.11, 339,106.03 and 138,298.10

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Solution

The fourth proportional to 245,721.11, 339,106.03 and 138,298.10 is: 190,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,721.11 : 339,106.03 = 138,298.10 : x
  2. Step 2: Convert to fraction form
    245,721.11/339,106.03 = 138,298.10/x
  3. Step 3: Cross multiply
    245,721.11x = 339,106.03 × 138,298.10
  4. Step 4: Simplify right side
    245,721.11x = 46,897,718,384.19
  5. Step 5: Solve for x
    x = 46,897,718,384.19/245,721.11
  6. Step 6: Final answer
    x = 190,857.51

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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.