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Finding the Fourth Proportional to 402,812.72, 602,904.84 and 296,168.40

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Solution

The fourth proportional to 402,812.72, 602,904.84 and 296,168.40 is: 443,286.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,812.72 : 602,904.84 = 296,168.40 : x
  2. Step 2: Convert to fraction form
    402,812.72/602,904.84 = 296,168.40/x
  3. Step 3: Cross multiply
    402,812.72x = 602,904.84 × 296,168.40
  4. Step 4: Simplify right side
    402,812.72x = 178,561,361,815.06
  5. Step 5: Solve for x
    x = 178,561,361,815.06/402,812.72
  6. Step 6: Final answer
    x = 443,286.30

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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.