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Finding the Fourth Proportional to 279,088.42, 418,601.50 and 76,700.04

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Solution

The fourth proportional to 279,088.42, 418,601.50 and 76,700.04 is: 115,041.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,088.42 : 418,601.50 = 76,700.04 : x
  2. Step 2: Convert to fraction form
    279,088.42/418,601.50 = 76,700.04/x
  3. Step 3: Cross multiply
    279,088.42x = 418,601.50 × 76,700.04
  4. Step 4: Simplify right side
    279,088.42x = 32,106,751,794.06
  5. Step 5: Solve for x
    x = 32,106,751,794.06/279,088.42
  6. Step 6: Final answer
    x = 115,041.50

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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.