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Finding the Fourth Proportional to 303,463.80, 455,001.30 and 126,041.40

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Solution

The fourth proportional to 303,463.80, 455,001.30 and 126,041.40 is: 188,981.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,463.80 : 455,001.30 = 126,041.40 : x
  2. Step 2: Convert to fraction form
    303,463.80/455,001.30 = 126,041.40/x
  3. Step 3: Cross multiply
    303,463.80x = 455,001.30 × 126,041.40
  4. Step 4: Simplify right side
    303,463.80x = 57,349,000,853.82
  5. Step 5: Solve for x
    x = 57,349,000,853.82/303,463.80
  6. Step 6: Final answer
    x = 188,981.36

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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.