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Finding the Fourth Proportional to 356,123.34, 534,012.54 and 131,589.72

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Solution

The fourth proportional to 356,123.34, 534,012.54 and 131,589.72 is: 197,320.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,123.34 : 534,012.54 = 131,589.72 : x
  2. Step 2: Convert to fraction form
    356,123.34/534,012.54 = 131,589.72/x
  3. Step 3: Cross multiply
    356,123.34x = 534,012.54 × 131,589.72
  4. Step 4: Simplify right side
    356,123.34x = 70,270,560,615.09
  5. Step 5: Solve for x
    x = 70,270,560,615.09/356,123.34
  6. Step 6: Final answer
    x = 197,320.85

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1.5x scale

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.