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Finding the Fourth Proportional to 279,381.72, 419,135.06 and 101,888.74

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Solution

The fourth proportional to 279,381.72, 419,135.06 and 101,888.74 is: 152,855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,381.72 : 419,135.06 = 101,888.74 : x
  2. Step 2: Convert to fraction form
    279,381.72/419,135.06 = 101,888.74/x
  3. Step 3: Cross multiply
    279,381.72x = 419,135.06 × 101,888.74
  4. Step 4: Simplify right side
    279,381.72x = 42,705,143,931.87
  5. Step 5: Solve for x
    x = 42,705,143,931.87/279,381.72
  6. Step 6: Final answer
    x = 152,855.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.