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Finding the Fourth Proportional to 553,591.20, 830,259.36 and 216,639.84

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Solution

The fourth proportional to 553,591.20, 830,259.36 and 216,639.84 is: 324,909.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,591.20 : 830,259.36 = 216,639.84 : x
  2. Step 2: Convert to fraction form
    553,591.20/830,259.36 = 216,639.84/x
  3. Step 3: Cross multiply
    553,591.20x = 830,259.36 × 216,639.84
  4. Step 4: Simplify right side
    553,591.20x = 179,867,254,908.90
  5. Step 5: Solve for x
    x = 179,867,254,908.90/553,591.20
  6. Step 6: Final answer
    x = 324,909.89

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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.