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Finding the Fourth Proportional to 437,615.80, 656,342.70 and 122,007.40

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Solution

The fourth proportional to 437,615.80, 656,342.70 and 122,007.40 is: 182,988.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,615.80 : 656,342.70 = 122,007.40 : x
  2. Step 2: Convert to fraction form
    437,615.80/656,342.70 = 122,007.40/x
  3. Step 3: Cross multiply
    437,615.80x = 656,342.70 × 122,007.40
  4. Step 4: Simplify right side
    437,615.80x = 80,078,666,335.98
  5. Step 5: Solve for x
    x = 80,078,666,335.98/437,615.80
  6. Step 6: Final answer
    x = 182,988.52

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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.