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Finding the Fourth Proportional to 439,301.20, 659,729.40 and 339,703.60

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Solution

The fourth proportional to 439,301.20, 659,729.40 and 339,703.60 is: 510,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,301.20 : 659,729.40 = 339,703.60 : x
  2. Step 2: Convert to fraction form
    439,301.20/659,729.40 = 339,703.60/x
  3. Step 3: Cross multiply
    439,301.20x = 659,729.40 × 339,703.60
  4. Step 4: Simplify right side
    439,301.20x = 224,112,452,205.84
  5. Step 5: Solve for x
    x = 224,112,452,205.84/439,301.20
  6. Step 6: Final answer
    x = 510,156.70

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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.