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Finding the Fourth Proportional to 279,936,276.90, 392,313,895.50 and 279,936,276.90

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Solution

The fourth proportional to 279,936,276.90, 392,313,895.50 and 279,936,276.90 is: 392,313,895.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,276.90 : 392,313,895.50 = 279,936,276.90 : x
  2. Step 2: Convert to fraction form
    279,936,276.90/392,313,895.50 = 279,936,276.90/x
  3. Step 3: Cross multiply
    279,936,276.90x = 392,313,895.50 × 279,936,276.90
  4. Step 4: Simplify right side
    279,936,276.90x = 109,822,891,282,405,648
  5. Step 5: Solve for x
    x = 109,822,891,282,405,648/279,936,276.90
  6. Step 6: Final answer
    x = 392,313,895.50

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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.