Home / 387,215,643.23-534,354,629.30-211,003,093.66

Finding the Fourth Proportional to 387,215,643.23, 534,354,629.30 and 211,003,093.66

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Solution

The fourth proportional to 387,215,643.23, 534,354,629.30 and 211,003,093.66 is: 291,182,657.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,215,643.23 : 534,354,629.30 = 211,003,093.66 : x
  2. Step 2: Convert to fraction form
    387,215,643.23/534,354,629.30 = 211,003,093.66/x
  3. Step 3: Cross multiply
    387,215,643.23x = 534,354,629.30 × 211,003,093.66
  4. Step 4: Simplify right side
    387,215,643.23x = 112,750,479,891,170,704
  5. Step 5: Solve for x
    x = 112,750,479,891,170,704/387,215,643.23
  6. Step 6: Final answer
    x = 291,182,657.16

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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.