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Finding the Fourth Proportional to 442,370.40, 660,555.13 and 351,391.88

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Solution

The fourth proportional to 442,370.40, 660,555.13 and 351,391.88 is: 524,704.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,370.40 : 660,555.13 = 351,391.88 : x
  2. Step 2: Convert to fraction form
    442,370.40/660,555.13 = 351,391.88/x
  3. Step 3: Cross multiply
    442,370.40x = 660,555.13 × 351,391.88
  4. Step 4: Simplify right side
    442,370.40x = 232,113,708,974.34
  5. Step 5: Solve for x
    x = 232,113,708,974.34/442,370.40
  6. Step 6: Final answer
    x = 524,704.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.