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Finding the Fourth Proportional to 215,677.59, 323,516.39 and 65,918.31

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Solution

The fourth proportional to 215,677.59, 323,516.39 and 65,918.31 is: 98,877.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,677.59 : 323,516.39 = 65,918.31 : x
  2. Step 2: Convert to fraction form
    215,677.59/323,516.39 = 65,918.31/x
  3. Step 3: Cross multiply
    215,677.59x = 323,516.39 × 65,918.31
  4. Step 4: Simplify right side
    215,677.59x = 21,325,653,356.51
  5. Step 5: Solve for x
    x = 21,325,653,356.51/215,677.59
  6. Step 6: Final answer
    x = 98,877.47

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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.