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Finding the Fourth Proportional to 424,846.40, 637,269.60 and 129,358.40

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Solution

The fourth proportional to 424,846.40, 637,269.60 and 129,358.40 is: 194,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,846.40 : 637,269.60 = 129,358.40 : x
  2. Step 2: Convert to fraction form
    424,846.40/637,269.60 = 129,358.40/x
  3. Step 3: Cross multiply
    424,846.40x = 637,269.60 × 129,358.40
  4. Step 4: Simplify right side
    424,846.40x = 82,436,175,824.64
  5. Step 5: Solve for x
    x = 82,436,175,824.64/424,846.40
  6. Step 6: Final answer
    x = 194,037.60

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1.5x scale

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.