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Finding the Fourth Proportional to 299,440,285.80, 449,160,428.70 and 255,602,308.20

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Solution

The fourth proportional to 299,440,285.80, 449,160,428.70 and 255,602,308.20 is: 383,403,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,440,285.80 : 449,160,428.70 = 255,602,308.20 : x
  2. Step 2: Convert to fraction form
    299,440,285.80/449,160,428.70 = 255,602,308.20/x
  3. Step 3: Cross multiply
    299,440,285.80x = 449,160,428.70 × 255,602,308.20
  4. Step 4: Simplify right side
    299,440,285.80x = 114,806,442,327,821,520
  5. Step 5: Solve for x
    x = 114,806,442,327,821,520/299,440,285.80
  6. Step 6: Final answer
    x = 383,403,462.30

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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.