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Finding the Fourth Proportional to 561,239.04, 774,500.16 and 306,583.68

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Solution

The fourth proportional to 561,239.04, 774,500.16 and 306,583.68 is: 423,080.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,239.04 : 774,500.16 = 306,583.68 : x
  2. Step 2: Convert to fraction form
    561,239.04/774,500.16 = 306,583.68/x
  3. Step 3: Cross multiply
    561,239.04x = 774,500.16 × 306,583.68
  4. Step 4: Simplify right side
    561,239.04x = 237,449,109,213.39
  5. Step 5: Solve for x
    x = 237,449,109,213.39/561,239.04
  6. Step 6: Final answer
    x = 423,080.17

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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.