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Finding the Fourth Proportional to 425,236.52, 637,838.82 and 105,389.44

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Solution

The fourth proportional to 425,236.52, 637,838.82 and 105,389.44 is: 158,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,236.52 : 637,838.82 = 105,389.44 : x
  2. Step 2: Convert to fraction form
    425,236.52/637,838.82 = 105,389.44/x
  3. Step 3: Cross multiply
    425,236.52x = 637,838.82 × 105,389.44
  4. Step 4: Simplify right side
    425,236.52x = 67,221,476,050.06
  5. Step 5: Solve for x
    x = 67,221,476,050.06/425,236.52
  6. Step 6: Final answer
    x = 158,080.20

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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.