Home / 289,042.30-433,369.05-154,128.70

Finding the Fourth Proportional to 289,042.30, 433,369.05 and 154,128.70

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Solution

The fourth proportional to 289,042.30, 433,369.05 and 154,128.70 is: 231,089.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,042.30 : 433,369.05 = 154,128.70 : x
  2. Step 2: Convert to fraction form
    289,042.30/433,369.05 = 154,128.70/x
  3. Step 3: Cross multiply
    289,042.30x = 433,369.05 × 154,128.70
  4. Step 4: Simplify right side
    289,042.30x = 66,794,608,296.74
  5. Step 5: Solve for x
    x = 66,794,608,296.74/289,042.30
  6. Step 6: Final answer
    x = 231,089.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.