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Finding the Fourth Proportional to 368,422.80, 508,422.84 and 207,277.92

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Solution

The fourth proportional to 368,422.80, 508,422.84 and 207,277.92 is: 286,043.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,422.80 : 508,422.84 = 207,277.92 : x
  2. Step 2: Convert to fraction form
    368,422.80/508,422.84 = 207,277.92/x
  3. Step 3: Cross multiply
    368,422.80x = 508,422.84 × 207,277.92
  4. Step 4: Simplify right side
    368,422.80x = 105,384,828,755.69
  5. Step 5: Solve for x
    x = 105,384,828,755.69/368,422.80
  6. Step 6: Final answer
    x = 286,043.18

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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.