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Finding the Fourth Proportional to 522,900.55, 784,260.35 and 138,651.94

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Solution

The fourth proportional to 522,900.55, 784,260.35 and 138,651.94 is: 207,953.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,900.55 : 784,260.35 = 138,651.94 : x
  2. Step 2: Convert to fraction form
    522,900.55/784,260.35 = 138,651.94/x
  3. Step 3: Cross multiply
    522,900.55x = 784,260.35 × 138,651.94
  4. Step 4: Simplify right side
    522,900.55x = 108,739,218,992.58
  5. Step 5: Solve for x
    x = 108,739,218,992.58/522,900.55
  6. Step 6: Final answer
    x = 207,953.92

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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.