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Finding the Fourth Proportional to 298,045.08, 447,122.88 and 98,379.36

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Solution

The fourth proportional to 298,045.08, 447,122.88 and 98,379.36 is: 147,587.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,045.08 : 447,122.88 = 98,379.36 : x
  2. Step 2: Convert to fraction form
    298,045.08/447,122.88 = 98,379.36/x
  3. Step 3: Cross multiply
    298,045.08x = 447,122.88 × 98,379.36
  4. Step 4: Simplify right side
    298,045.08x = 43,987,662,775.76
  5. Step 5: Solve for x
    x = 43,987,662,775.76/298,045.08
  6. Step 6: Final answer
    x = 147,587.28

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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.