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Finding the Fourth Proportional to 215,636.58, 323,458.65 and 71,543.25

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Solution

The fourth proportional to 215,636.58, 323,458.65 and 71,543.25 is: 107,316.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,636.58 : 323,458.65 = 71,543.25 : x
  2. Step 2: Convert to fraction form
    215,636.58/323,458.65 = 71,543.25/x
  3. Step 3: Cross multiply
    215,636.58x = 323,458.65 × 71,543.25
  4. Step 4: Simplify right side
    215,636.58x = 23,141,283,061.61
  5. Step 5: Solve for x
    x = 23,141,283,061.61/215,636.58
  6. Step 6: Final answer
    x = 107,316.13

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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.