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Finding the Fourth Proportional to 609,379.77, 913,509.87 and 209,925.57

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Solution

The fourth proportional to 609,379.77, 913,509.87 and 209,925.57 is: 314,695.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,379.77 : 913,509.87 = 209,925.57 : x
  2. Step 2: Convert to fraction form
    609,379.77/913,509.87 = 209,925.57/x
  3. Step 3: Cross multiply
    609,379.77x = 913,509.87 × 209,925.57
  4. Step 4: Simplify right side
    609,379.77x = 191,769,080,160.38
  5. Step 5: Solve for x
    x = 191,769,080,160.38/609,379.77
  6. Step 6: Final answer
    x = 314,695.51

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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.