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Finding the Fourth Proportional to 368,212.13, 508,135.78 and 207,065.77

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Solution

The fourth proportional to 368,212.13, 508,135.78 and 207,065.77 is: 285,752.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,212.13 : 508,135.78 = 207,065.77 : x
  2. Step 2: Convert to fraction form
    368,212.13/508,135.78 = 207,065.77/x
  3. Step 3: Cross multiply
    368,212.13x = 508,135.78 × 207,065.77
  4. Step 4: Simplify right side
    368,212.13x = 105,217,525,538.74
  5. Step 5: Solve for x
    x = 105,217,525,538.74/368,212.13
  6. Step 6: Final answer
    x = 285,752.47

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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.