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Finding the Fourth Proportional to 303,463.34, 455,286.12 and 143,661.06

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Solution

The fourth proportional to 303,463.34, 455,286.12 and 143,661.06 is: 215,534.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,463.34 : 455,286.12 = 143,661.06 : x
  2. Step 2: Convert to fraction form
    303,463.34/455,286.12 = 143,661.06/x
  3. Step 3: Cross multiply
    303,463.34x = 455,286.12 × 143,661.06
  4. Step 4: Simplify right side
    303,463.34x = 65,406,886,602.49
  5. Step 5: Solve for x
    x = 65,406,886,602.49/303,463.34
  6. Step 6: Final answer
    x = 215,534.72

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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.