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Finding the Fourth Proportional to 303,463.80, 455,570.10 and 191,143.80

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Solution

The fourth proportional to 303,463.80, 455,570.10 and 191,143.80 is: 286,951.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,463.80 : 455,570.10 = 191,143.80 : x
  2. Step 2: Convert to fraction form
    303,463.80/455,570.10 = 191,143.80/x
  3. Step 3: Cross multiply
    303,463.80x = 455,570.10 × 191,143.80
  4. Step 4: Simplify right side
    303,463.80x = 87,079,400,080.38
  5. Step 5: Solve for x
    x = 87,079,400,080.38/303,463.80
  6. Step 6: Final answer
    x = 286,951.52

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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.