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Finding the Fourth Proportional to 245,427.92, 338,688.84 and 139,443.92

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Solution

The fourth proportional to 245,427.92, 338,688.84 and 139,443.92 is: 192,431.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,427.92 : 338,688.84 = 139,443.92 : x
  2. Step 2: Convert to fraction form
    245,427.92/338,688.84 = 139,443.92/x
  3. Step 3: Cross multiply
    245,427.92x = 338,688.84 × 139,443.92
  4. Step 4: Simplify right side
    245,427.92x = 47,228,099,509.85
  5. Step 5: Solve for x
    x = 47,228,099,509.85/245,427.92
  6. Step 6: Final answer
    x = 192,431.65

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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.