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Finding the Fourth Proportional to 553,856.20, 830,201.10 and 216,766.60

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Solution

The fourth proportional to 553,856.20, 830,201.10 and 216,766.60 is: 324,921.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,856.20 : 830,201.10 = 216,766.60 : x
  2. Step 2: Convert to fraction form
    553,856.20/830,201.10 = 216,766.60/x
  3. Step 3: Cross multiply
    553,856.20x = 830,201.10 × 216,766.60
  4. Step 4: Simplify right side
    553,856.20x = 179,959,869,763.26
  5. Step 5: Solve for x
    x = 179,959,869,763.26/553,856.20
  6. Step 6: Final answer
    x = 324,921.65

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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.