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Finding the Fourth Proportional to 278,886.84, 384,866.84 and 151,562.46

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Solution

The fourth proportional to 278,886.84, 384,866.84 and 151,562.46 is: 209,157.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,886.84 : 384,866.84 = 151,562.46 : x
  2. Step 2: Convert to fraction form
    278,886.84/384,866.84 = 151,562.46/x
  3. Step 3: Cross multiply
    278,886.84x = 384,866.84 × 151,562.46
  4. Step 4: Simplify right side
    278,886.84x = 58,331,365,042.83
  5. Step 5: Solve for x
    x = 58,331,365,042.83/278,886.84
  6. Step 6: Final answer
    x = 209,157.83

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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.