Home / 390,635,131.12-538,831,274.56-231,752,767.97

Finding the Fourth Proportional to 390,635,131.12, 538,831,274.56 and 231,752,767.97

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Solution

The fourth proportional to 390,635,131.12, 538,831,274.56 and 231,752,767.97 is: 319,673,345.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,635,131.12 : 538,831,274.56 = 231,752,767.97 : x
  2. Step 2: Convert to fraction form
    390,635,131.12/538,831,274.56 = 231,752,767.97/x
  3. Step 3: Cross multiply
    390,635,131.12x = 538,831,274.56 × 231,752,767.97
  4. Step 4: Simplify right side
    390,635,131.12x = 124,875,639,348,850,736
  5. Step 5: Solve for x
    x = 124,875,639,348,850,736/390,635,131.12
  6. Step 6: Final answer
    x = 319,673,345.79

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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.