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Finding the Fourth Proportional to 303,306.40, 455,051.92 and 143,505.04

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Solution

The fourth proportional to 303,306.40, 455,051.92 and 143,505.04 is: 215,301.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,306.40 : 455,051.92 = 143,505.04 : x
  2. Step 2: Convert to fraction form
    303,306.40/455,051.92 = 143,505.04/x
  3. Step 3: Cross multiply
    303,306.40x = 455,051.92 × 143,505.04
  4. Step 4: Simplify right side
    303,306.40x = 65,302,243,981.68
  5. Step 5: Solve for x
    x = 65,302,243,981.68/303,306.40
  6. Step 6: Final answer
    x = 215,301.24

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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.