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Finding the Fourth Proportional to 278,179.72, 383,888.22 and 150,855.28

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Solution

The fourth proportional to 278,179.72, 383,888.22 and 150,855.28 is: 208,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,179.72 : 383,888.22 = 150,855.28 : x
  2. Step 2: Convert to fraction form
    278,179.72/383,888.22 = 150,855.28/x
  3. Step 3: Cross multiply
    278,179.72x = 383,888.22 × 150,855.28
  4. Step 4: Simplify right side
    278,179.72x = 57,911,564,916.80
  5. Step 5: Solve for x
    x = 57,911,564,916.80/278,179.72
  6. Step 6: Final answer
    x = 208,180.40

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1.5x scale

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.