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Finding the Fourth Proportional to 560,206.40, 839,608.80 and 279,801.92

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Solution

The fourth proportional to 560,206.40, 839,608.80 and 279,801.92 is: 419,352.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,206.40 : 839,608.80 = 279,801.92 : x
  2. Step 2: Convert to fraction form
    560,206.40/839,608.80 = 279,801.92/x
  3. Step 3: Cross multiply
    560,206.40x = 839,608.80 × 279,801.92
  4. Step 4: Simplify right side
    560,206.40x = 234,924,154,288.90
  5. Step 5: Solve for x
    x = 234,924,154,288.90/560,206.40
  6. Step 6: Final answer
    x = 419,352.86

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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.