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Finding the Fourth Proportional to 262,441,390.80, 393,662,086.20 and 89,860,846.80

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Solution

The fourth proportional to 262,441,390.80, 393,662,086.20 and 89,860,846.80 is: 134,791,270.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,441,390.80 : 393,662,086.20 = 89,860,846.80 : x
  2. Step 2: Convert to fraction form
    262,441,390.80/393,662,086.20 = 89,860,846.80/x
  3. Step 3: Cross multiply
    262,441,390.80x = 393,662,086.20 × 89,860,846.80
  4. Step 4: Simplify right side
    262,441,390.80x = 35,374,808,418,986,592
  5. Step 5: Solve for x
    x = 35,374,808,418,986,592/262,441,390.80
  6. Step 6: Final answer
    x = 134,791,270.20

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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.