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Finding the Fourth Proportional to 425,837.20, 638,525.40 and 176,544.40

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Solution

The fourth proportional to 425,837.20, 638,525.40 and 176,544.40 is: 264,721.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,837.20 : 638,525.40 = 176,544.40 : x
  2. Step 2: Convert to fraction form
    425,837.20/638,525.40 = 176,544.40/x
  3. Step 3: Cross multiply
    425,837.20x = 638,525.40 × 176,544.40
  4. Step 4: Simplify right side
    425,837.20x = 112,728,083,627.76
  5. Step 5: Solve for x
    x = 112,728,083,627.76/425,837.20
  6. Step 6: Final answer
    x = 264,721.08

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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.