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Finding the Fourth Proportional to 559,813.20, 839,719.80 and 185,836.20

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Solution

The fourth proportional to 559,813.20, 839,719.80 and 185,836.20 is: 278,754.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,813.20 : 839,719.80 = 185,836.20 : x
  2. Step 2: Convert to fraction form
    559,813.20/839,719.80 = 185,836.20/x
  3. Step 3: Cross multiply
    559,813.20x = 839,719.80 × 185,836.20
  4. Step 4: Simplify right side
    559,813.20x = 156,050,336,696.76
  5. Step 5: Solve for x
    x = 156,050,336,696.76/559,813.20
  6. Step 6: Final answer
    x = 278,754.30

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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.