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Finding the Fourth Proportional to 270,406.37, 373,188.81 and 155,689.11

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Solution

The fourth proportional to 270,406.37, 373,188.81 and 155,689.11 is: 214,867.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,406.37 : 373,188.81 = 155,689.11 : x
  2. Step 2: Convert to fraction form
    270,406.37/373,188.81 = 155,689.11/x
  3. Step 3: Cross multiply
    270,406.37x = 373,188.81 × 155,689.11
  4. Step 4: Simplify right side
    270,406.37x = 58,101,433,690.86
  5. Step 5: Solve for x
    x = 58,101,433,690.86/270,406.37
  6. Step 6: Final answer
    x = 214,867.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.