Home / 319,550.65-441,139.70-198,730.86

Finding the Fourth Proportional to 319,550.65, 441,139.70 and 198,730.86

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Solution

The fourth proportional to 319,550.65, 441,139.70 and 198,730.86 is: 274,347.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,550.65 : 441,139.70 = 198,730.86 : x
  2. Step 2: Convert to fraction form
    319,550.65/441,139.70 = 198,730.86/x
  3. Step 3: Cross multiply
    319,550.65x = 441,139.70 × 198,730.86
  4. Step 4: Simplify right side
    319,550.65x = 87,668,070,140.35
  5. Step 5: Solve for x
    x = 87,668,070,140.35/319,550.65
  6. Step 6: Final answer
    x = 274,347.96

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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.