Home / 387,171,634.88-534,290,128.97-210,961,078.20

Finding the Fourth Proportional to 387,171,634.88, 534,290,128.97 and 210,961,078.20

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Solution

The fourth proportional to 387,171,634.88, 534,290,128.97 and 210,961,078.20 is: 291,122,622.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,171,634.88 : 534,290,128.97 = 210,961,078.20 : x
  2. Step 2: Convert to fraction form
    387,171,634.88/534,290,128.97 = 210,961,078.20/x
  3. Step 3: Cross multiply
    387,171,634.88x = 534,290,128.97 × 210,961,078.20
  4. Step 4: Simplify right side
    387,171,634.88x = 112,714,421,678,073,440
  5. Step 5: Solve for x
    x = 112,714,421,678,073,440/387,171,634.88
  6. Step 6: Final answer
    x = 291,122,622.43

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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.