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Finding the Fourth Proportional to 299,320.60, 449,499.30 and 289,989.40

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Solution

The fourth proportional to 299,320.60, 449,499.30 and 289,989.40 is: 435,486.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,320.60 : 449,499.30 = 289,989.40 : x
  2. Step 2: Convert to fraction form
    299,320.60/449,499.30 = 289,989.40/x
  3. Step 3: Cross multiply
    299,320.60x = 449,499.30 × 289,989.40
  4. Step 4: Simplify right side
    299,320.60x = 130,350,032,307.42
  5. Step 5: Solve for x
    x = 130,350,032,307.42/299,320.60
  6. Step 6: Final answer
    x = 435,486.34

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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.