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Finding the Fourth Proportional to 647,068.20, 970,602.30 and 173,826.60

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Solution

The fourth proportional to 647,068.20, 970,602.30 and 173,826.60 is: 260,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,068.20 : 970,602.30 = 173,826.60 : x
  2. Step 2: Convert to fraction form
    647,068.20/970,602.30 = 173,826.60/x
  3. Step 3: Cross multiply
    647,068.20x = 970,602.30 × 173,826.60
  4. Step 4: Simplify right side
    647,068.20x = 168,716,497,761.18
  5. Step 5: Solve for x
    x = 168,716,497,761.18/647,068.20
  6. Step 6: Final answer
    x = 260,739.90

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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.