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Finding the Fourth Proportional to 425,222.94, 637,818.43 and 105,375.74

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Solution

The fourth proportional to 425,222.94, 637,818.43 and 105,375.74 is: 158,059.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,222.94 : 637,818.43 = 105,375.74 : x
  2. Step 2: Convert to fraction form
    425,222.94/637,818.43 = 105,375.74/x
  3. Step 3: Cross multiply
    425,222.94x = 637,818.43 × 105,375.74
  4. Step 4: Simplify right side
    425,222.94x = 67,210,585,495.57
  5. Step 5: Solve for x
    x = 67,210,585,495.57/425,222.94
  6. Step 6: Final answer
    x = 158,059.64

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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.