Home / 388,383,927.27-535,977,720.63-212,183,335.11

Finding the Fourth Proportional to 388,383,927.27, 535,977,720.63 and 212,183,335.11

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Solution

The fourth proportional to 388,383,927.27, 535,977,720.63 and 212,183,335.11 is: 292,817,318.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,383,927.27 : 535,977,720.63 = 212,183,335.11 : x
  2. Step 2: Convert to fraction form
    388,383,927.27/535,977,720.63 = 212,183,335.11/x
  3. Step 3: Cross multiply
    388,383,927.27x = 535,977,720.63 × 212,183,335.11
  4. Step 4: Simplify right side
    388,383,927.27x = 113,725,540,307,929,264
  5. Step 5: Solve for x
    x = 113,725,540,307,929,264/388,383,927.27
  6. Step 6: Final answer
    x = 292,817,318.95

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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.