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Finding the Fourth Proportional to 375,991.17, 518,564.93 and 330,572.85

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Solution

The fourth proportional to 375,991.17, 518,564.93 and 330,572.85 is: 455,924.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,991.17 : 518,564.93 = 330,572.85 : x
  2. Step 2: Convert to fraction form
    375,991.17/518,564.93 = 330,572.85/x
  3. Step 3: Cross multiply
    375,991.17x = 518,564.93 × 330,572.85
  4. Step 4: Simplify right side
    375,991.17x = 171,423,485,053.76
  5. Step 5: Solve for x
    x = 171,423,485,053.76/375,991.17
  6. Step 6: Final answer
    x = 455,924.24

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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.