Home / 217,418,633.51-325,716,459.31-128,521,058.54

Finding the Fourth Proportional to 217,418,633.51, 325,716,459.31 and 128,521,058.54

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Solution

The fourth proportional to 217,418,633.51, 325,716,459.31 and 128,521,058.54 is: 192,538,346.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,418,633.51 : 325,716,459.31 = 128,521,058.54 : x
  2. Step 2: Convert to fraction form
    217,418,633.51/325,716,459.31 = 128,521,058.54/x
  3. Step 3: Cross multiply
    217,418,633.51x = 325,716,459.31 × 128,521,058.54
  4. Step 4: Simplify right side
    217,418,633.51x = 41,861,424,132,233,104
  5. Step 5: Solve for x
    x = 41,861,424,132,233,104/217,418,633.51
  6. Step 6: Final answer
    x = 192,538,346.21

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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.