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Finding the Fourth Proportional to 278,316,076.20, 417,474,114.30 and 278,316,076.20

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Solution

The fourth proportional to 278,316,076.20, 417,474,114.30 and 278,316,076.20 is: 417,474,114.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,316,076.20 : 417,474,114.30 = 278,316,076.20 : x
  2. Step 2: Convert to fraction form
    278,316,076.20/417,474,114.30 = 278,316,076.20/x
  3. Step 3: Cross multiply
    278,316,076.20x = 417,474,114.30 × 278,316,076.20
  4. Step 4: Simplify right side
    278,316,076.20x = 116,189,757,407,046,304
  5. Step 5: Solve for x
    x = 116,189,757,407,046,304/278,316,076.20
  6. Step 6: Final answer
    x = 417,474,114.30

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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.