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Finding the Fourth Proportional to 553,855.70, 830,200.35 and 216,766.10

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Solution

The fourth proportional to 553,855.70, 830,200.35 and 216,766.10 is: 324,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,855.70 : 830,200.35 = 216,766.10 : x
  2. Step 2: Convert to fraction form
    553,855.70/830,200.35 = 216,766.10/x
  3. Step 3: Cross multiply
    553,855.70x = 830,200.35 × 216,766.10
  4. Step 4: Simplify right side
    553,855.70x = 179,959,292,088.14
  5. Step 5: Solve for x
    x = 179,959,292,088.14/553,855.70
  6. Step 6: Final answer
    x = 324,920.90

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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.