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Finding the Fourth Proportional to 424,806.58, 637,117.42 and 140,429.94

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Solution

The fourth proportional to 424,806.58, 637,117.42 and 140,429.94 is: 210,614.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,806.58 : 637,117.42 = 140,429.94 : x
  2. Step 2: Convert to fraction form
    424,806.58/637,117.42 = 140,429.94/x
  3. Step 3: Cross multiply
    424,806.58x = 637,117.42 × 140,429.94
  4. Step 4: Simplify right side
    424,806.58x = 89,470,361,063.55
  5. Step 5: Solve for x
    x = 89,470,361,063.55/424,806.58
  6. Step 6: Final answer
    x = 210,614.35

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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.