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Finding the Fourth Proportional to 424,931.60, 637,627.80 and 188,310.80

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Solution

The fourth proportional to 424,931.60, 637,627.80 and 188,310.80 is: 282,568.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,931.60 : 637,627.80 = 188,310.80 : x
  2. Step 2: Convert to fraction form
    424,931.60/637,627.80 = 188,310.80/x
  3. Step 3: Cross multiply
    424,931.60x = 637,627.80 × 188,310.80
  4. Step 4: Simplify right side
    424,931.60x = 120,072,201,120.24
  5. Step 5: Solve for x
    x = 120,072,201,120.24/424,931.60
  6. Step 6: Final answer
    x = 282,568.30

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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.