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Finding the Fourth Proportional to 665,014.39, 997,661.88 and 215,700.37

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Solution

The fourth proportional to 665,014.39, 997,661.88 and 215,700.37 is: 323,596.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,014.39 : 997,661.88 = 215,700.37 : x
  2. Step 2: Convert to fraction form
    665,014.39/997,661.88 = 215,700.37/x
  3. Step 3: Cross multiply
    665,014.39x = 997,661.88 × 215,700.37
  4. Step 4: Simplify right side
    665,014.39x = 215,196,035,572.39
  5. Step 5: Solve for x
    x = 215,196,035,572.39/665,014.39
  6. Step 6: Final answer
    x = 323,596.06

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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.