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Finding the Fourth Proportional to 245,428.92, 338,690.22 and 139,444.92

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Solution

The fourth proportional to 245,428.92, 338,690.22 and 139,444.92 is: 192,433.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,428.92 : 338,690.22 = 139,444.92 : x
  2. Step 2: Convert to fraction form
    245,428.92/338,690.22 = 139,444.92/x
  3. Step 3: Cross multiply
    245,428.92x = 338,690.22 × 139,444.92
  4. Step 4: Simplify right side
    245,428.92x = 47,228,630,632.68
  5. Step 5: Solve for x
    x = 47,228,630,632.68/245,428.92
  6. Step 6: Final answer
    x = 192,433.03

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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.