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Finding the Fourth Proportional to 303,081.12, 454,572.63 and 143,156.79

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Solution

The fourth proportional to 303,081.12, 454,572.63 and 143,156.79 is: 214,712.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,081.12 : 454,572.63 = 143,156.79 : x
  2. Step 2: Convert to fraction form
    303,081.12/454,572.63 = 143,156.79/x
  3. Step 3: Cross multiply
    303,081.12x = 454,572.63 × 143,156.79
  4. Step 4: Simplify right side
    303,081.12x = 65,075,158,532.66
  5. Step 5: Solve for x
    x = 65,075,158,532.66/303,081.12
  6. Step 6: Final answer
    x = 214,712.02

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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.