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Finding the Fourth Proportional to 299,548,869.60, 449,323,304.40 and 245,129,311.20

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Solution

The fourth proportional to 299,548,869.60, 449,323,304.40 and 245,129,311.20 is: 367,693,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,548,869.60 : 449,323,304.40 = 245,129,311.20 : x
  2. Step 2: Convert to fraction form
    299,548,869.60/449,323,304.40 = 245,129,311.20/x
  3. Step 3: Cross multiply
    299,548,869.60x = 449,323,304.40 × 245,129,311.20
  4. Step 4: Simplify right side
    299,548,869.60x = 110,142,312,113,679,920
  5. Step 5: Solve for x
    x = 110,142,312,113,679,920/299,548,869.60
  6. Step 6: Final answer
    x = 367,693,966.80

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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.