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Finding the Fourth Proportional to 263,896,281.70, 395,844,422.55 and 72,420,057.70

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Solution

The fourth proportional to 263,896,281.70, 395,844,422.55 and 72,420,057.70 is: 108,630,086.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,896,281.70 : 395,844,422.55 = 72,420,057.70 : x
  2. Step 2: Convert to fraction form
    263,896,281.70/395,844,422.55 = 72,420,057.70/x
  3. Step 3: Cross multiply
    263,896,281.70x = 395,844,422.55 × 72,420,057.70
  4. Step 4: Simplify right side
    263,896,281.70x = 28,667,075,921,294,184
  5. Step 5: Solve for x
    x = 28,667,075,921,294,184/263,896,281.70
  6. Step 6: Final answer
    x = 108,630,086.55

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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.