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Finding the Fourth Proportional to 641,495.61, 962,457.12 and 215,073.63

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Solution

The fourth proportional to 641,495.61, 962,457.12 and 215,073.63 is: 322,682.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,495.61 : 962,457.12 = 215,073.63 : x
  2. Step 2: Convert to fraction form
    641,495.61/962,457.12 = 215,073.63/x
  3. Step 3: Cross multiply
    641,495.61x = 962,457.12 × 215,073.63
  4. Step 4: Simplify right side
    641,495.61x = 206,999,146,517.75
  5. Step 5: Solve for x
    x = 206,999,146,517.75/641,495.61
  6. Step 6: Final answer
    x = 322,682.09

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1.5x scale

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.