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Finding the Fourth Proportional to 425,798.07, 638,697.21 and 173,215.98

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Solution

The fourth proportional to 425,798.07, 638,697.21 and 173,215.98 is: 259,824.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,798.07 : 638,697.21 = 173,215.98 : x
  2. Step 2: Convert to fraction form
    425,798.07/638,697.21 = 173,215.98/x
  3. Step 3: Cross multiply
    425,798.07x = 638,697.21 × 173,215.98
  4. Step 4: Simplify right side
    425,798.07x = 110,632,563,153.42
  5. Step 5: Solve for x
    x = 110,632,563,153.42/425,798.07
  6. Step 6: Final answer
    x = 259,824.01

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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.