Home / 217,418,683.77-325,716,534.32-128,521,108.71

Finding the Fourth Proportional to 217,418,683.77, 325,716,534.32 and 128,521,108.71

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Solution

The fourth proportional to 217,418,683.77, 325,716,534.32 and 128,521,108.71 is: 192,538,421.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,418,683.77 : 325,716,534.32 = 128,521,108.71 : x
  2. Step 2: Convert to fraction form
    217,418,683.77/325,716,534.32 = 128,521,108.71/x
  3. Step 3: Cross multiply
    217,418,683.77x = 325,716,534.32 × 128,521,108.71
  4. Step 4: Simplify right side
    217,418,683.77x = 41,861,450,115,342,560
  5. Step 5: Solve for x
    x = 41,861,450,115,342,560/217,418,683.77
  6. Step 6: Final answer
    x = 192,538,421.21

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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.