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Finding the Fourth Proportional to 245,315.58, 338,538.51 and 148,518.12

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Solution

The fourth proportional to 245,315.58, 338,538.51 and 148,518.12 is: 204,956.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,315.58 : 338,538.51 = 148,518.12 : x
  2. Step 2: Convert to fraction form
    245,315.58/338,538.51 = 148,518.12/x
  3. Step 3: Cross multiply
    245,315.58x = 338,538.51 × 148,518.12
  4. Step 4: Simplify right side
    245,315.58x = 50,279,103,052.80
  5. Step 5: Solve for x
    x = 50,279,103,052.80/245,315.58
  6. Step 6: Final answer
    x = 204,956.83

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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.