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Finding the Fourth Proportional to 289,551.80, 434,327.70 and 248,079.80

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Solution

The fourth proportional to 289,551.80, 434,327.70 and 248,079.80 is: 372,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,551.80 : 434,327.70 = 248,079.80 : x
  2. Step 2: Convert to fraction form
    289,551.80/434,327.70 = 248,079.80/x
  3. Step 3: Cross multiply
    289,551.80x = 434,327.70 × 248,079.80
  4. Step 4: Simplify right side
    289,551.80x = 107,747,928,950.46
  5. Step 5: Solve for x
    x = 107,747,928,950.46/289,551.80
  6. Step 6: Final answer
    x = 372,119.70

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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.