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Finding the Fourth Proportional to 300,515.20, 450,700.80 and 173,881.60

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Solution

The fourth proportional to 300,515.20, 450,700.80 and 173,881.60 is: 260,780.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,515.20 : 450,700.80 = 173,881.60 : x
  2. Step 2: Convert to fraction form
    300,515.20/450,700.80 = 173,881.60/x
  3. Step 3: Cross multiply
    300,515.20x = 450,700.80 × 173,881.60
  4. Step 4: Simplify right side
    300,515.20x = 78,368,576,225.28
  5. Step 5: Solve for x
    x = 78,368,576,225.28/300,515.20
  6. Step 6: Final answer
    x = 260,780.74

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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.