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Finding the Fourth Proportional to 278,447.14, 384,254.79 and 151,122.79

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Solution

The fourth proportional to 278,447.14, 384,254.79 and 151,122.79 is: 208,548.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,447.14 : 384,254.79 = 151,122.79 : x
  2. Step 2: Convert to fraction form
    278,447.14/384,254.79 = 151,122.79/x
  3. Step 3: Cross multiply
    278,447.14x = 384,254.79 × 151,122.79
  4. Step 4: Simplify right side
    278,447.14x = 58,069,655,935.66
  5. Step 5: Solve for x
    x = 58,069,655,935.66/278,447.14
  6. Step 6: Final answer
    x = 208,548.22

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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.