Home / 288,146,857.51-397,642,579.13-155,987,755.98

Finding the Fourth Proportional to 288,146,857.51, 397,642,579.13 and 155,987,755.98

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Solution

The fourth proportional to 288,146,857.51, 397,642,579.13 and 155,987,755.98 is: 215,263,057.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,146,857.51 : 397,642,579.13 = 155,987,755.98 : x
  2. Step 2: Convert to fraction form
    288,146,857.51/397,642,579.13 = 155,987,755.98/x
  3. Step 3: Cross multiply
    288,146,857.51x = 397,642,579.13 × 155,987,755.98
  4. Step 4: Simplify right side
    288,146,857.51x = 62,027,373,600,588,272
  5. Step 5: Solve for x
    x = 62,027,373,600,588,272/288,146,857.51
  6. Step 6: Final answer
    x = 215,263,057.65

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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.