Home / 388,383,931.05-535,977,725.79-212,183,338.89

Finding the Fourth Proportional to 388,383,931.05, 535,977,725.79 and 212,183,338.89

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Solution

The fourth proportional to 388,383,931.05, 535,977,725.79 and 212,183,338.89 is: 292,817,324.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,383,931.05 : 535,977,725.79 = 212,183,338.89 : x
  2. Step 2: Convert to fraction form
    388,383,931.05/535,977,725.79 = 212,183,338.89/x
  3. Step 3: Cross multiply
    388,383,931.05x = 535,977,725.79 × 212,183,338.89
  4. Step 4: Simplify right side
    388,383,931.05x = 113,725,543,428,791,056
  5. Step 5: Solve for x
    x = 113,725,543,428,791,056/388,383,931.05
  6. Step 6: Final answer
    x = 292,817,324.14

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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.