Home / 298,215,710.34-447,115,721.94-132,128,938.65

Finding the Fourth Proportional to 298,215,710.34, 447,115,721.94 and 132,128,938.65

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Solution

The fourth proportional to 298,215,710.34, 447,115,721.94 and 132,128,938.65 is: 198,101,319.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,215,710.34 : 447,115,721.94 = 132,128,938.65 : x
  2. Step 2: Convert to fraction form
    298,215,710.34/447,115,721.94 = 132,128,938.65/x
  3. Step 3: Cross multiply
    298,215,710.34x = 447,115,721.94 × 132,128,938.65
  4. Step 4: Simplify right side
    298,215,710.34x = 59,076,925,793,660,720
  5. Step 5: Solve for x
    x = 59,076,925,793,660,720/298,215,710.34
  6. Step 6: Final answer
    x = 198,101,319.77

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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.