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Finding the Fourth Proportional to 303,501.48, 455,343.30 and 143,699.19

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Solution

The fourth proportional to 303,501.48, 455,343.30 and 143,699.19 is: 215,591.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,501.48 : 455,343.30 = 143,699.19 : x
  2. Step 2: Convert to fraction form
    303,501.48/455,343.30 = 143,699.19/x
  3. Step 3: Cross multiply
    303,501.48x = 455,343.30 × 143,699.19
  4. Step 4: Simplify right side
    303,501.48x = 65,432,463,381.93
  5. Step 5: Solve for x
    x = 65,432,463,381.93/303,501.48
  6. Step 6: Final answer
    x = 215,591.91

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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.