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Finding the Fourth Proportional to 345,462.97, 476,774.37 and 207,686.50

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Solution

The fourth proportional to 345,462.97, 476,774.37 and 207,686.50 is: 286,628.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,462.97 : 476,774.37 = 207,686.50 : x
  2. Step 2: Convert to fraction form
    345,462.97/476,774.37 = 207,686.50/x
  3. Step 3: Cross multiply
    345,462.97x = 476,774.37 × 207,686.50
  4. Step 4: Simplify right side
    345,462.97x = 99,019,599,003.07
  5. Step 5: Solve for x
    x = 99,019,599,003.07/345,462.97
  6. Step 6: Final answer
    x = 286,628.69

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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.