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Finding the Fourth Proportional to 425,089.80, 637,739.28 and 125,568.90

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Solution

The fourth proportional to 425,089.80, 637,739.28 and 125,568.90 is: 188,384.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,089.80 : 637,739.28 = 125,568.90 : x
  2. Step 2: Convert to fraction form
    425,089.80/637,739.28 = 125,568.90/x
  3. Step 3: Cross multiply
    425,089.80x = 637,739.28 × 125,568.90
  4. Step 4: Simplify right side
    425,089.80x = 80,080,219,876.39
  5. Step 5: Solve for x
    x = 80,080,219,876.39/425,089.80
  6. Step 6: Final answer
    x = 188,384.24

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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.