Home / 289,780.76-399,897.18-162,456.38

Finding the Fourth Proportional to 289,780.76, 399,897.18 and 162,456.38

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Solution

The fourth proportional to 289,780.76, 399,897.18 and 162,456.38 is: 224,189.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,780.76 : 399,897.18 = 162,456.38 : x
  2. Step 2: Convert to fraction form
    289,780.76/399,897.18 = 162,456.38/x
  3. Step 3: Cross multiply
    289,780.76x = 399,897.18 × 162,456.38
  4. Step 4: Simplify right side
    289,780.76x = 64,965,848,235.01
  5. Step 5: Solve for x
    x = 64,965,848,235.01/289,780.76
  6. Step 6: Final answer
    x = 224,189.65

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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.