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Finding the Fourth Proportional to 245,567.69, 338,778.59 and 140,736.12

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Solution

The fourth proportional to 245,567.69, 338,778.59 and 140,736.12 is: 194,155.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,567.69 : 338,778.59 = 140,736.12 : x
  2. Step 2: Convert to fraction form
    245,567.69/338,778.59 = 140,736.12/x
  3. Step 3: Cross multiply
    245,567.69x = 338,778.59 × 140,736.12
  4. Step 4: Simplify right side
    245,567.69x = 47,678,384,295.67
  5. Step 5: Solve for x
    x = 47,678,384,295.67/245,567.69
  6. Step 6: Final answer
    x = 194,155.77

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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.