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Finding the Fourth Proportional to 557,679.40, 836,521.89 and 136,955.32

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Solution

The fourth proportional to 557,679.40, 836,521.89 and 136,955.32 is: 205,433.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,679.40 : 836,521.89 = 136,955.32 : x
  2. Step 2: Convert to fraction form
    557,679.40/836,521.89 = 136,955.32/x
  3. Step 3: Cross multiply
    557,679.40x = 836,521.89 × 136,955.32
  4. Step 4: Simplify right side
    557,679.40x = 114,566,123,131.96
  5. Step 5: Solve for x
    x = 114,566,123,131.96/557,679.40
  6. Step 6: Final answer
    x = 205,433.67

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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.