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Finding the Fourth Proportional to 303,719.20, 455,578.80 and 162,001.60

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Solution

The fourth proportional to 303,719.20, 455,578.80 and 162,001.60 is: 243,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,719.20 : 455,578.80 = 162,001.60 : x
  2. Step 2: Convert to fraction form
    303,719.20/455,578.80 = 162,001.60/x
  3. Step 3: Cross multiply
    303,719.20x = 455,578.80 × 162,001.60
  4. Step 4: Simplify right side
    303,719.20x = 73,804,494,526.08
  5. Step 5: Solve for x
    x = 73,804,494,526.08/303,719.20
  6. Step 6: Final answer
    x = 243,002.40

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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.