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Finding the Fourth Proportional to 610,057.80, 915,231.60 and 210,701.88

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Solution

The fourth proportional to 610,057.80, 915,231.60 and 210,701.88 is: 316,102.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,057.80 : 915,231.60 = 210,701.88 : x
  2. Step 2: Convert to fraction form
    610,057.80/915,231.60 = 210,701.88/x
  3. Step 3: Cross multiply
    610,057.80x = 915,231.60 × 210,701.88
  4. Step 4: Simplify right side
    610,057.80x = 192,841,018,755.41
  5. Step 5: Solve for x
    x = 192,841,018,755.41/610,057.80
  6. Step 6: Final answer
    x = 316,102.87

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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.