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Finding the Fourth Proportional to 279,950.58, 419,728.98 and 130,031.70

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Solution

The fourth proportional to 279,950.58, 419,728.98 and 130,031.70 is: 194,956.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,950.58 : 419,728.98 = 130,031.70 : x
  2. Step 2: Convert to fraction form
    279,950.58/419,728.98 = 130,031.70/x
  3. Step 3: Cross multiply
    279,950.58x = 419,728.98 × 130,031.70
  4. Step 4: Simplify right side
    279,950.58x = 54,578,072,808.67
  5. Step 5: Solve for x
    x = 54,578,072,808.67/279,950.58
  6. Step 6: Final answer
    x = 194,956.10

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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.