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Finding the Fourth Proportional to 610,572.55, 915,212.43 and 205,379.02

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Solution

The fourth proportional to 610,572.55, 915,212.43 and 205,379.02 is: 307,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,572.55 : 915,212.43 = 205,379.02 : x
  2. Step 2: Convert to fraction form
    610,572.55/915,212.43 = 205,379.02/x
  3. Step 3: Cross multiply
    610,572.55x = 915,212.43 × 205,379.02
  4. Step 4: Simplify right side
    610,572.55x = 187,965,431,965.22
  5. Step 5: Solve for x
    x = 187,965,431,965.22/610,572.55
  6. Step 6: Final answer
    x = 307,851.10

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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.