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Finding the Fourth Proportional to 398,288.96, 549,841.91 and 269,905.69

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Solution

The fourth proportional to 398,288.96, 549,841.91 and 269,905.69 is: 372,607.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,288.96 : 549,841.91 = 269,905.69 : x
  2. Step 2: Convert to fraction form
    398,288.96/549,841.91 = 269,905.69/x
  3. Step 3: Cross multiply
    398,288.96x = 549,841.91 × 269,905.69
  4. Step 4: Simplify right side
    398,288.96x = 148,405,460,109.47
  5. Step 5: Solve for x
    x = 148,405,460,109.47/398,288.96
  6. Step 6: Final answer
    x = 372,607.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.