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Finding the Fourth Proportional to 303,656.81, 418,653.30 and 207,992.57

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Solution

The fourth proportional to 303,656.81, 418,653.30 and 207,992.57 is: 286,760.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,656.81 : 418,653.30 = 207,992.57 : x
  2. Step 2: Convert to fraction form
    303,656.81/418,653.30 = 207,992.57/x
  3. Step 3: Cross multiply
    303,656.81x = 418,653.30 × 207,992.57
  4. Step 4: Simplify right side
    303,656.81x = 87,076,773,712.71
  5. Step 5: Solve for x
    x = 87,076,773,712.71/303,656.81
  6. Step 6: Final answer
    x = 286,760.49

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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.