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Finding the Fourth Proportional to 561,690.99, 775,133.96 and 307,042.25

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Solution

The fourth proportional to 561,690.99, 775,133.96 and 307,042.25 is: 423,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,690.99 : 775,133.96 = 307,042.25 : x
  2. Step 2: Convert to fraction form
    561,690.99/775,133.96 = 307,042.25/x
  3. Step 3: Cross multiply
    561,690.99x = 775,133.96 × 307,042.25
  4. Step 4: Simplify right side
    561,690.99x = 237,998,869,718.93
  5. Step 5: Solve for x
    x = 237,998,869,718.93/561,690.99
  6. Step 6: Final answer
    x = 423,718.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.