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Finding the Fourth Proportional to 614,470.40, 921,861.04 and 171,238.40

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Solution

The fourth proportional to 614,470.40, 921,861.04 and 171,238.40 is: 256,900.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,470.40 : 921,861.04 = 171,238.40 : x
  2. Step 2: Convert to fraction form
    614,470.40/921,861.04 = 171,238.40/x
  3. Step 3: Cross multiply
    614,470.40x = 921,861.04 × 171,238.40
  4. Step 4: Simplify right side
    614,470.40x = 157,858,009,511.94
  5. Step 5: Solve for x
    x = 157,858,009,511.94/614,470.40
  6. Step 6: Final answer
    x = 256,900.92

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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.