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Finding the Fourth Proportional to 302,938.80, 454,429.80 and 92,576.40

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Solution

The fourth proportional to 302,938.80, 454,429.80 and 92,576.40 is: 138,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,938.80 : 454,429.80 = 92,576.40 : x
  2. Step 2: Convert to fraction form
    302,938.80/454,429.80 = 92,576.40/x
  3. Step 3: Cross multiply
    302,938.80x = 454,429.80 × 92,576.40
  4. Step 4: Simplify right side
    302,938.80x = 42,069,474,936.72
  5. Step 5: Solve for x
    x = 42,069,474,936.72/302,938.80
  6. Step 6: Final answer
    x = 138,871.20

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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.