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Finding the Fourth Proportional to 289,013.48, 398,923.90 and 168,208.44

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Solution

The fourth proportional to 289,013.48, 398,923.90 and 168,208.44 is: 232,177.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,013.48 : 398,923.90 = 168,208.44 : x
  2. Step 2: Convert to fraction form
    289,013.48/398,923.90 = 168,208.44/x
  3. Step 3: Cross multiply
    289,013.48x = 398,923.90 × 168,208.44
  4. Step 4: Simplify right side
    289,013.48x = 67,102,366,897.72
  5. Step 5: Solve for x
    x = 67,102,366,897.72/289,013.48
  6. Step 6: Final answer
    x = 232,177.29

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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.