Home / 384,916.80-531,174.14-212,831.78

Finding the Fourth Proportional to 384,916.80, 531,174.14 and 212,831.78

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Solution

The fourth proportional to 384,916.80, 531,174.14 and 212,831.78 is: 293,701.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,916.80 : 531,174.14 = 212,831.78 : x
  2. Step 2: Convert to fraction form
    384,916.80/531,174.14 = 212,831.78/x
  3. Step 3: Cross multiply
    384,916.80x = 531,174.14 × 212,831.78
  4. Step 4: Simplify right side
    384,916.80x = 113,050,737,706.17
  5. Step 5: Solve for x
    x = 113,050,737,706.17/384,916.80
  6. Step 6: Final answer
    x = 293,701.75

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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.