Home / 393,382,216.67-542,853,239.01-217,166,435.81

Finding the Fourth Proportional to 393,382,216.67, 542,853,239.01 and 217,166,435.81

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Solution

The fourth proportional to 393,382,216.67, 542,853,239.01 and 217,166,435.81 is: 299,681,831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,382,216.67 : 542,853,239.01 = 217,166,435.81 : x
  2. Step 2: Convert to fraction form
    393,382,216.67/542,853,239.01 = 217,166,435.81/x
  3. Step 3: Cross multiply
    393,382,216.67x = 542,853,239.01 × 217,166,435.81
  4. Step 4: Simplify right side
    393,382,216.67x = 117,889,503,083,715,760
  5. Step 5: Solve for x
    x = 117,889,503,083,715,760/393,382,216.67
  6. Step 6: Final answer
    x = 299,681,831.28

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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.