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Finding the Fourth Proportional to 303,614.94, 455,421.45 and 81,998.94

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Solution

The fourth proportional to 303,614.94, 455,421.45 and 81,998.94 is: 122,998.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,614.94 : 455,421.45 = 81,998.94 : x
  2. Step 2: Convert to fraction form
    303,614.94/455,421.45 = 81,998.94/x
  3. Step 3: Cross multiply
    303,614.94x = 455,421.45 × 81,998.94
  4. Step 4: Simplify right side
    303,614.94x = 37,344,076,153.26
  5. Step 5: Solve for x
    x = 37,344,076,153.26/303,614.94
  6. Step 6: Final answer
    x = 122,998.15

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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.