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Finding the Fourth Proportional to 210,789.37, 316,188.17 and 77,601.07

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Solution

The fourth proportional to 210,789.37, 316,188.17 and 77,601.07 is: 116,403.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,789.37 : 316,188.17 = 77,601.07 : x
  2. Step 2: Convert to fraction form
    210,789.37/316,188.17 = 77,601.07/x
  3. Step 3: Cross multiply
    210,789.37x = 316,188.17 × 77,601.07
  4. Step 4: Simplify right side
    210,789.37x = 24,536,539,425.87
  5. Step 5: Solve for x
    x = 24,536,539,425.87/210,789.37
  6. Step 6: Final answer
    x = 116,403.12

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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.