Home / 255,931.36-383,920.08-68,938.72

Finding the Fourth Proportional to 255,931.36, 383,920.08 and 68,938.72

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Solution

The fourth proportional to 255,931.36, 383,920.08 and 68,938.72 is: 103,414.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,931.36 : 383,920.08 = 68,938.72 : x
  2. Step 2: Convert to fraction form
    255,931.36/383,920.08 = 68,938.72/x
  3. Step 3: Cross multiply
    255,931.36x = 383,920.08 × 68,938.72
  4. Step 4: Simplify right side
    255,931.36x = 26,466,958,897.50
  5. Step 5: Solve for x
    x = 26,466,958,897.50/255,931.36
  6. Step 6: Final answer
    x = 103,414.29

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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.