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Finding the Fourth Proportional to 424,868.76, 637,399.16 and 140,558.64

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Solution

The fourth proportional to 424,868.76, 637,399.16 and 140,558.64 is: 210,869.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,868.76 : 637,399.16 = 140,558.64 : x
  2. Step 2: Convert to fraction form
    424,868.76/637,399.16 = 140,558.64/x
  3. Step 3: Cross multiply
    424,868.76x = 637,399.16 × 140,558.64
  4. Step 4: Simplify right side
    424,868.76x = 89,591,959,066.74
  5. Step 5: Solve for x
    x = 89,591,959,066.74/424,868.76
  6. Step 6: Final answer
    x = 210,869.73

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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.