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Finding the Fourth Proportional to 278,700.10, 384,608.16 and 151,375.72

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Solution

The fourth proportional to 278,700.10, 384,608.16 and 151,375.72 is: 208,899.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,700.10 : 384,608.16 = 151,375.72 : x
  2. Step 2: Convert to fraction form
    278,700.10/384,608.16 = 151,375.72/x
  3. Step 3: Cross multiply
    278,700.10x = 384,608.16 × 151,375.72
  4. Step 4: Simplify right side
    278,700.10x = 58,220,337,137.88
  5. Step 5: Solve for x
    x = 58,220,337,137.88/278,700.10
  6. Step 6: Final answer
    x = 208,899.59

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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.