Home / 393,362,403.84-542,825,890.08-217,146,617.04

Finding the Fourth Proportional to 393,362,403.84, 542,825,890.08 and 217,146,617.04

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Solution

The fourth proportional to 393,362,403.84, 542,825,890.08 and 217,146,617.04 is: 299,654,477.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,362,403.84 : 542,825,890.08 = 217,146,617.04 : x
  2. Step 2: Convert to fraction form
    393,362,403.84/542,825,890.08 = 217,146,617.04/x
  3. Step 3: Cross multiply
    393,362,403.84x = 542,825,890.08 × 217,146,617.04
  4. Step 4: Simplify right side
    393,362,403.84x = 117,872,805,672,598,896
  5. Step 5: Solve for x
    x = 117,872,805,672,598,896/393,362,403.84
  6. Step 6: Final answer
    x = 299,654,477.71

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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.