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Finding the Fourth Proportional to 383,508.88, 529,238.66 and 209,079.06

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Solution

The fourth proportional to 383,508.88, 529,238.66 and 209,079.06 is: 288,527.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,508.88 : 529,238.66 = 209,079.06 : x
  2. Step 2: Convert to fraction form
    383,508.88/529,238.66 = 209,079.06/x
  3. Step 3: Cross multiply
    383,508.88x = 529,238.66 × 209,079.06
  4. Step 4: Simplify right side
    383,508.88x = 110,652,721,548.46
  5. Step 5: Solve for x
    x = 110,652,721,548.46/383,508.88
  6. Step 6: Final answer
    x = 288,527.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.