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Finding the Fourth Proportional to 303,337.20, 455,005.80 and 191,144.10

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Solution

The fourth proportional to 303,337.20, 455,005.80 and 191,144.10 is: 286,716.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,337.20 : 455,005.80 = 191,144.10 : x
  2. Step 2: Convert to fraction form
    303,337.20/455,005.80 = 191,144.10/x
  3. Step 3: Cross multiply
    303,337.20x = 455,005.80 × 191,144.10
  4. Step 4: Simplify right side
    303,337.20x = 86,971,674,135.78
  5. Step 5: Solve for x
    x = 86,971,674,135.78/303,337.20
  6. Step 6: Final answer
    x = 286,716.15

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1.5x scale

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.