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Finding the Fourth Proportional to 425,023.61, 637,134.66 and 211,589.82

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Solution

The fourth proportional to 425,023.61, 637,134.66 and 211,589.82 is: 317,185.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,023.61 : 637,134.66 = 211,589.82 : x
  2. Step 2: Convert to fraction form
    425,023.61/637,134.66 = 211,589.82/x
  3. Step 3: Cross multiply
    425,023.61x = 637,134.66 × 211,589.82
  4. Step 4: Simplify right side
    425,023.61x = 134,811,208,025.16
  5. Step 5: Solve for x
    x = 134,811,208,025.16/425,023.61
  6. Step 6: Final answer
    x = 317,185.23

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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.