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Finding the Fourth Proportional to 318,936,259.20, 447,720,086.40 and 318,936,259.20

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Solution

The fourth proportional to 318,936,259.20, 447,720,086.40 and 318,936,259.20 is: 447,720,086.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,936,259.20 : 447,720,086.40 = 318,936,259.20 : x
  2. Step 2: Convert to fraction form
    318,936,259.20/447,720,086.40 = 318,936,259.20/x
  3. Step 3: Cross multiply
    318,936,259.20x = 447,720,086.40 × 318,936,259.20
  4. Step 4: Simplify right side
    318,936,259.20x = 142,794,169,525,116,784
  5. Step 5: Solve for x
    x = 142,794,169,525,116,784/318,936,259.20
  6. Step 6: Final answer
    x = 447,720,086.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.