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Finding the Fourth Proportional to 279,674.20, 385,818.15 and 189,061.93

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Solution

The fourth proportional to 279,674.20, 385,818.15 and 189,061.93 is: 260,816.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,674.20 : 385,818.15 = 189,061.93 : x
  2. Step 2: Convert to fraction form
    279,674.20/385,818.15 = 189,061.93/x
  3. Step 3: Cross multiply
    279,674.20x = 385,818.15 × 189,061.93
  4. Step 4: Simplify right side
    279,674.20x = 72,943,524,068.03
  5. Step 5: Solve for x
    x = 72,943,524,068.03/279,674.20
  6. Step 6: Final answer
    x = 260,816.06

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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.