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Finding the Fourth Proportional to 279,603.28, 385,856.92 and 152,278.77

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Solution

The fourth proportional to 279,603.28, 385,856.92 and 152,278.77 is: 210,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,603.28 : 385,856.92 = 152,278.77 : x
  2. Step 2: Convert to fraction form
    279,603.28/385,856.92 = 152,278.77/x
  3. Step 3: Cross multiply
    279,603.28x = 385,856.92 × 152,278.77
  4. Step 4: Simplify right side
    279,603.28x = 58,757,817,173.59
  5. Step 5: Solve for x
    x = 58,757,817,173.59/279,603.28
  6. Step 6: Final answer
    x = 210,147.10

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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.