Home / 209,780.40-289,702.56-179,390.16

Finding the Fourth Proportional to 209,780.40, 289,702.56 and 179,390.16

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Solution

The fourth proportional to 209,780.40, 289,702.56 and 179,390.16 is: 247,734.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,780.40 : 289,702.56 = 179,390.16 : x
  2. Step 2: Convert to fraction form
    209,780.40/289,702.56 = 179,390.16/x
  3. Step 3: Cross multiply
    209,780.40x = 289,702.56 × 179,390.16
  4. Step 4: Simplify right side
    209,780.40x = 51,969,788,590.81
  5. Step 5: Solve for x
    x = 51,969,788,590.81/209,780.40
  6. Step 6: Final answer
    x = 247,734.24

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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.