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Finding the Fourth Proportional to 298,386.72, 447,487.20 and 98,662.32

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Solution

The fourth proportional to 298,386.72, 447,487.20 and 98,662.32 is: 147,962.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,386.72 : 447,487.20 = 98,662.32 : x
  2. Step 2: Convert to fraction form
    298,386.72/447,487.20 = 98,662.32/x
  3. Step 3: Cross multiply
    298,386.72x = 447,487.20 × 98,662.32
  4. Step 4: Simplify right side
    298,386.72x = 44,150,125,322.30
  5. Step 5: Solve for x
    x = 44,150,125,322.30/298,386.72
  6. Step 6: Final answer
    x = 147,962.77

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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.