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Finding the Fourth Proportional to 561,767.92, 775,239.59 and 307,119.11

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Solution

The fourth proportional to 561,767.92, 775,239.59 and 307,119.11 is: 423,824.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,767.92 : 775,239.59 = 307,119.11 : x
  2. Step 2: Convert to fraction form
    561,767.92/775,239.59 = 307,119.11/x
  3. Step 3: Cross multiply
    561,767.92x = 775,239.59 × 307,119.11
  4. Step 4: Simplify right side
    561,767.92x = 238,090,889,809.17
  5. Step 5: Solve for x
    x = 238,090,889,809.17/561,767.92
  6. Step 6: Final answer
    x = 423,824.29

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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.