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Finding the Fourth Proportional to 398,498.76, 549,991.62 and 245,626.92

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Solution

The fourth proportional to 398,498.76, 549,991.62 and 245,626.92 is: 339,004.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,498.76 : 549,991.62 = 245,626.92 : x
  2. Step 2: Convert to fraction form
    398,498.76/549,991.62 = 245,626.92/x
  3. Step 3: Cross multiply
    398,498.76x = 549,991.62 × 245,626.92
  4. Step 4: Simplify right side
    398,498.76x = 135,092,747,646.41
  5. Step 5: Solve for x
    x = 135,092,747,646.41/398,498.76
  6. Step 6: Final answer
    x = 339,004.19

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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.