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Finding the Fourth Proportional to 272,602.40, 408,903.60 and 188,621.60

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Solution

The fourth proportional to 272,602.40, 408,903.60 and 188,621.60 is: 282,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,602.40 : 408,903.60 = 188,621.60 : x
  2. Step 2: Convert to fraction form
    272,602.40/408,903.60 = 188,621.60/x
  3. Step 3: Cross multiply
    272,602.40x = 408,903.60 × 188,621.60
  4. Step 4: Simplify right side
    272,602.40x = 77,128,051,277.76
  5. Step 5: Solve for x
    x = 77,128,051,277.76/272,602.40
  6. Step 6: Final answer
    x = 282,932.40

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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.