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Finding the Fourth Proportional to 424,930.60, 637,626.30 and 188,309.80

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Solution

The fourth proportional to 424,930.60, 637,626.30 and 188,309.80 is: 282,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,930.60 : 637,626.30 = 188,309.80 : x
  2. Step 2: Convert to fraction form
    424,930.60/637,626.30 = 188,309.80/x
  3. Step 3: Cross multiply
    424,930.60x = 637,626.30 × 188,309.80
  4. Step 4: Simplify right side
    424,930.60x = 120,071,281,027.74
  5. Step 5: Solve for x
    x = 120,071,281,027.74/424,930.60
  6. Step 6: Final answer
    x = 282,566.80

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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.