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Finding the Fourth Proportional to 610,705.58, 915,918.91 and 231,668.40

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Solution

The fourth proportional to 610,705.58, 915,918.91 and 231,668.40 is: 347,449.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,705.58 : 915,918.91 = 231,668.40 : x
  2. Step 2: Convert to fraction form
    610,705.58/915,918.91 = 231,668.40/x
  3. Step 3: Cross multiply
    610,705.58x = 915,918.91 × 231,668.40
  4. Step 4: Simplify right side
    610,705.58x = 212,189,471,264.97
  5. Step 5: Solve for x
    x = 212,189,471,264.97/610,705.58
  6. Step 6: Final answer
    x = 347,449.70

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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.