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Finding the Fourth Proportional to 347,672.40, 521,508.60 and 288,623.40

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Solution

The fourth proportional to 347,672.40, 521,508.60 and 288,623.40 is: 432,935.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,672.40 : 521,508.60 = 288,623.40 : x
  2. Step 2: Convert to fraction form
    347,672.40/521,508.60 = 288,623.40/x
  3. Step 3: Cross multiply
    347,672.40x = 521,508.60 × 288,623.40
  4. Step 4: Simplify right side
    347,672.40x = 150,519,585,261.24
  5. Step 5: Solve for x
    x = 150,519,585,261.24/347,672.40
  6. Step 6: Final answer
    x = 432,935.10

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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.