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Finding the Fourth Proportional to 373,289.70, 559,934.55 and 278,811.30

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Solution

The fourth proportional to 373,289.70, 559,934.55 and 278,811.30 is: 418,216.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,289.70 : 559,934.55 = 278,811.30 : x
  2. Step 2: Convert to fraction form
    373,289.70/559,934.55 = 278,811.30/x
  3. Step 3: Cross multiply
    373,289.70x = 559,934.55 × 278,811.30
  4. Step 4: Simplify right side
    373,289.70x = 156,116,079,800.42
  5. Step 5: Solve for x
    x = 156,116,079,800.42/373,289.70
  6. Step 6: Final answer
    x = 418,216.95

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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.