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Finding the Fourth Proportional to 272,606.40, 408,909.60 and 188,625.60

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Solution

The fourth proportional to 272,606.40, 408,909.60 and 188,625.60 is: 282,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,606.40 : 408,909.60 = 188,625.60 : x
  2. Step 2: Convert to fraction form
    272,606.40/408,909.60 = 188,625.60/x
  3. Step 3: Cross multiply
    272,606.40x = 408,909.60 × 188,625.60
  4. Step 4: Simplify right side
    272,606.40x = 77,130,818,645.76
  5. Step 5: Solve for x
    x = 77,130,818,645.76/272,606.40
  6. Step 6: Final answer
    x = 282,938.40

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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.