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Finding the Fourth Proportional to 424,814.81, 637,221.43 and 125,505.64

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Solution

The fourth proportional to 424,814.81, 637,221.43 and 125,505.64 is: 188,258.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,814.81 : 637,221.43 = 125,505.64 : x
  2. Step 2: Convert to fraction form
    424,814.81/637,221.43 = 125,505.64/x
  3. Step 3: Cross multiply
    424,814.81x = 637,221.43 × 125,505.64
  4. Step 4: Simplify right side
    424,814.81x = 79,974,879,580.23
  5. Step 5: Solve for x
    x = 79,974,879,580.23/424,814.81
  6. Step 6: Final answer
    x = 188,258.22

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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.