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Finding the Fourth Proportional to 289,548.30, 434,322.45 and 248,076.30

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Solution

The fourth proportional to 289,548.30, 434,322.45 and 248,076.30 is: 372,114.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,548.30 : 434,322.45 = 248,076.30 : x
  2. Step 2: Convert to fraction form
    289,548.30/434,322.45 = 248,076.30/x
  3. Step 3: Cross multiply
    289,548.30x = 434,322.45 × 248,076.30
  4. Step 4: Simplify right side
    289,548.30x = 107,745,106,402.94
  5. Step 5: Solve for x
    x = 107,745,106,402.94/289,548.30
  6. Step 6: Final answer
    x = 372,114.45

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1.5x scale

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.