Home / 393,420,099.36-542,908,913.82-217,204,892.58

Finding the Fourth Proportional to 393,420,099.36, 542,908,913.82 and 217,204,892.58

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Solution

The fourth proportional to 393,420,099.36, 542,908,913.82 and 217,204,892.58 is: 299,736,776.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,420,099.36 : 542,908,913.82 = 217,204,892.58 : x
  2. Step 2: Convert to fraction form
    393,420,099.36/542,908,913.82 = 217,204,892.58/x
  3. Step 3: Cross multiply
    393,420,099.36x = 542,908,913.82 × 217,204,892.58
  4. Step 4: Simplify right side
    393,420,099.36x = 117,922,472,306,997,600
  5. Step 5: Solve for x
    x = 117,922,472,306,997,600/393,420,099.36
  6. Step 6: Final answer
    x = 299,736,776.28

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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.