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Finding the Fourth Proportional to 658,136.66, 908,228.64 and 371,675.21

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Solution

The fourth proportional to 658,136.66, 908,228.64 and 371,675.21 is: 512,911.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,136.66 : 908,228.64 = 371,675.21 : x
  2. Step 2: Convert to fraction form
    658,136.66/908,228.64 = 371,675.21/x
  3. Step 3: Cross multiply
    658,136.66x = 908,228.64 × 371,675.21
  4. Step 4: Simplify right side
    658,136.66x = 337,566,065,958.87
  5. Step 5: Solve for x
    x = 337,566,065,958.87/658,136.66
  6. Step 6: Final answer
    x = 512,911.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.