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Finding the Fourth Proportional to 245,123.66, 367,685.76 and 76,644.86

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Solution

The fourth proportional to 245,123.66, 367,685.76 and 76,644.86 is: 114,967.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,123.66 : 367,685.76 = 76,644.86 : x
  2. Step 2: Convert to fraction form
    245,123.66/367,685.76 = 76,644.86/x
  3. Step 3: Cross multiply
    245,123.66x = 367,685.76 × 76,644.86
  4. Step 4: Simplify right side
    245,123.66x = 28,181,223,599.19
  5. Step 5: Solve for x
    x = 28,181,223,599.19/245,123.66
  6. Step 6: Final answer
    x = 114,967.37

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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.