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Finding the Fourth Proportional to 398,259.48, 549,347 and 236,994.15

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Solution

The fourth proportional to 398,259.48, 549,347 and 236,994.15 is: 326,902.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,259.48 : 549,347 = 236,994.15 : x
  2. Step 2: Convert to fraction form
    398,259.48/549,347 = 236,994.15/x
  3. Step 3: Cross multiply
    398,259.48x = 549,347 × 236,994.15
  4. Step 4: Simplify right side
    398,259.48x = 130,192,025,320.05
  5. Step 5: Solve for x
    x = 130,192,025,320.05/398,259.48
  6. Step 6: Final answer
    x = 326,902.51

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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.