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Finding the Fourth Proportional to 303,073.16, 418,069.70 and 189,699.08

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Solution

The fourth proportional to 303,073.16, 418,069.70 and 189,699.08 is: 261,677.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,073.16 : 418,069.70 = 189,699.08 : x
  2. Step 2: Convert to fraction form
    303,073.16/418,069.70 = 189,699.08/x
  3. Step 3: Cross multiply
    303,073.16x = 418,069.70 × 189,699.08
  4. Step 4: Simplify right side
    303,073.16x = 79,307,437,465.88
  5. Step 5: Solve for x
    x = 79,307,437,465.88/303,073.16
  6. Step 6: Final answer
    x = 261,677.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.