Home / 256,686,261.25-385,028,793.08-168,610,784.78

Finding the Fourth Proportional to 256,686,261.25, 385,028,793.08 and 168,610,784.78

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Solution

The fourth proportional to 256,686,261.25, 385,028,793.08 and 168,610,784.78 is: 252,915,783.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,686,261.25 : 385,028,793.08 = 168,610,784.78 : x
  2. Step 2: Convert to fraction form
    256,686,261.25/385,028,793.08 = 168,610,784.78/x
  3. Step 3: Cross multiply
    256,686,261.25x = 385,028,793.08 × 168,610,784.78
  4. Step 4: Simplify right side
    256,686,261.25x = 64,920,006,964,115,032
  5. Step 5: Solve for x
    x = 64,920,006,964,115,032/256,686,261.25
  6. Step 6: Final answer
    x = 252,915,783.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.