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Finding the Fourth Proportional to 439,745.30, 659,877.15 and 290,417.30

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Solution

The fourth proportional to 439,745.30, 659,877.15 and 290,417.30 is: 435,797.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,745.30 : 659,877.15 = 290,417.30 : x
  2. Step 2: Convert to fraction form
    439,745.30/659,877.15 = 290,417.30/x
  3. Step 3: Cross multiply
    439,745.30x = 659,877.15 × 290,417.30
  4. Step 4: Simplify right side
    439,745.30x = 191,639,740,234.70
  5. Step 5: Solve for x
    x = 191,639,740,234.70/439,745.30
  6. Step 6: Final answer
    x = 435,797.13

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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.