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Finding the Fourth Proportional to 545,179.20, 818,254.80 and 320,258.40

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Solution

The fourth proportional to 545,179.20, 818,254.80 and 320,258.40 is: 480,673.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,179.20 : 818,254.80 = 320,258.40 : x
  2. Step 2: Convert to fraction form
    545,179.20/818,254.80 = 320,258.40/x
  3. Step 3: Cross multiply
    545,179.20x = 818,254.80 × 320,258.40
  4. Step 4: Simplify right side
    545,179.20x = 262,052,973,040.32
  5. Step 5: Solve for x
    x = 262,052,973,040.32/545,179.20
  6. Step 6: Final answer
    x = 480,673.09

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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.