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Finding the Fourth Proportional to 208,688.88, 312,996.96 and 96,359.52

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Solution

The fourth proportional to 208,688.88, 312,996.96 and 96,359.52 is: 144,522.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,688.88 : 312,996.96 = 96,359.52 : x
  2. Step 2: Convert to fraction form
    208,688.88/312,996.96 = 96,359.52/x
  3. Step 3: Cross multiply
    208,688.88x = 312,996.96 × 96,359.52
  4. Step 4: Simplify right side
    208,688.88x = 30,160,236,827.06
  5. Step 5: Solve for x
    x = 30,160,236,827.06/208,688.88
  6. Step 6: Final answer
    x = 144,522.49

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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.