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Finding the Fourth Proportional to 415,892.40, 623,838.60 and 330,271.35

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Solution

The fourth proportional to 415,892.40, 623,838.60 and 330,271.35 is: 495,407.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,892.40 : 623,838.60 = 330,271.35 : x
  2. Step 2: Convert to fraction form
    415,892.40/623,838.60 = 330,271.35/x
  3. Step 3: Cross multiply
    415,892.40x = 623,838.60 × 330,271.35
  4. Step 4: Simplify right side
    415,892.40x = 206,036,016,604.11
  5. Step 5: Solve for x
    x = 206,036,016,604.11/415,892.40
  6. Step 6: Final answer
    x = 495,407.03

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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.