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Finding the Fourth Proportional to 245,756.58, 339,107.16 and 138,320.22

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Solution

The fourth proportional to 245,756.58, 339,107.16 and 138,320.22 is: 190,861.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,756.58 : 339,107.16 = 138,320.22 : x
  2. Step 2: Convert to fraction form
    245,756.58/339,107.16 = 138,320.22/x
  3. Step 3: Cross multiply
    245,756.58x = 339,107.16 × 138,320.22
  4. Step 4: Simplify right side
    245,756.58x = 46,905,376,974.78
  5. Step 5: Solve for x
    x = 46,905,376,974.78/245,756.58
  6. Step 6: Final answer
    x = 190,861.12

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1.5x scale

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.