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Finding the Fourth Proportional to 439,841.41, 659,774.40 and 155,491.78

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Solution

The fourth proportional to 439,841.41, 659,774.40 and 155,491.78 is: 233,242.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,841.41 : 659,774.40 = 155,491.78 : x
  2. Step 2: Convert to fraction form
    439,841.41/659,774.40 = 155,491.78/x
  3. Step 3: Cross multiply
    439,841.41x = 659,774.40 × 155,491.78
  4. Step 4: Simplify right side
    439,841.41x = 102,589,495,854.43
  5. Step 5: Solve for x
    x = 102,589,495,854.43/439,841.41
  6. Step 6: Final answer
    x = 233,242.01

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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.