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Finding the Fourth Proportional to 553,629.60, 830,401.20 and 216,604.80

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Solution

The fourth proportional to 553,629.60, 830,401.20 and 216,604.80 is: 324,890.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,629.60 : 830,401.20 = 216,604.80 : x
  2. Step 2: Convert to fraction form
    553,629.60/830,401.20 = 216,604.80/x
  3. Step 3: Cross multiply
    553,629.60x = 830,401.20 × 216,604.80
  4. Step 4: Simplify right side
    553,629.60x = 179,868,885,845.76
  5. Step 5: Solve for x
    x = 179,868,885,845.76/553,629.60
  6. Step 6: Final answer
    x = 324,890.30

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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.