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Finding the Fourth Proportional to 279,602.28, 385,855.54 and 152,277.77

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Solution

The fourth proportional to 279,602.28, 385,855.54 and 152,277.77 is: 210,145.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,602.28 : 385,855.54 = 152,277.77 : x
  2. Step 2: Convert to fraction form
    279,602.28/385,855.54 = 152,277.77/x
  3. Step 3: Cross multiply
    279,602.28x = 385,855.54 × 152,277.77
  4. Step 4: Simplify right side
    279,602.28x = 58,757,219,447.32
  5. Step 5: Solve for x
    x = 58,757,219,447.32/279,602.28
  6. Step 6: Final answer
    x = 210,145.71

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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.