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Finding the Fourth Proportional to 270,811.52, 373,328.16 and 189,988.64

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Solution

The fourth proportional to 270,811.52, 373,328.16 and 189,988.64 is: 261,909.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,811.52 : 373,328.16 = 189,988.64 : x
  2. Step 2: Convert to fraction form
    270,811.52/373,328.16 = 189,988.64/x
  3. Step 3: Cross multiply
    270,811.52x = 373,328.16 × 189,988.64
  4. Step 4: Simplify right side
    270,811.52x = 70,928,109,392.10
  5. Step 5: Solve for x
    x = 70,928,109,392.10/270,811.52
  6. Step 6: Final answer
    x = 261,909.50

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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.