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Finding the Fourth Proportional to 278,897.62, 384,878.55 and 151,573.24

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Solution

The fourth proportional to 278,897.62, 384,878.55 and 151,573.24 is: 209,170.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,897.62 : 384,878.55 = 151,573.24 : x
  2. Step 2: Convert to fraction form
    278,897.62/384,878.55 = 151,573.24/x
  3. Step 3: Cross multiply
    278,897.62x = 384,878.55 × 151,573.24
  4. Step 4: Simplify right side
    278,897.62x = 58,337,288,830.00
  5. Step 5: Solve for x
    x = 58,337,288,830.00/278,897.62
  6. Step 6: Final answer
    x = 209,170.98

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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.