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Finding the Fourth Proportional to 303,689.90, 455,139.72 and 123,565.41

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Solution

The fourth proportional to 303,689.90, 455,139.72 and 123,565.41 is: 185,187.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,689.90 : 455,139.72 = 123,565.41 : x
  2. Step 2: Convert to fraction form
    303,689.90/455,139.72 = 123,565.41/x
  3. Step 3: Cross multiply
    303,689.90x = 455,139.72 × 123,565.41
  4. Step 4: Simplify right side
    303,689.90x = 56,239,526,109.09
  5. Step 5: Solve for x
    x = 56,239,526,109.09/303,689.90
  6. Step 6: Final answer
    x = 185,187.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.