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Finding the Fourth Proportional to 610,546.29, 915,958.95 and 211,186.71

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Solution

The fourth proportional to 610,546.29, 915,958.95 and 211,186.71 is: 316,828.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,546.29 : 915,958.95 = 211,186.71 : x
  2. Step 2: Convert to fraction form
    610,546.29/915,958.95 = 211,186.71/x
  3. Step 3: Cross multiply
    610,546.29x = 915,958.95 × 211,186.71
  4. Step 4: Simplify right side
    610,546.29x = 193,438,357,145.55
  5. Step 5: Solve for x
    x = 193,438,357,145.55/610,546.29
  6. Step 6: Final answer
    x = 316,828.32

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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.