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Finding the Fourth Proportional to 447,513.79, 671,110.84 and 147,939.07

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Solution

The fourth proportional to 447,513.79, 671,110.84 and 147,939.07 is: 221,855.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,513.79 : 671,110.84 = 147,939.07 : x
  2. Step 2: Convert to fraction form
    447,513.79/671,110.84 = 147,939.07/x
  3. Step 3: Cross multiply
    447,513.79x = 671,110.84 × 147,939.07
  4. Step 4: Simplify right side
    447,513.79x = 99,283,513,536.52
  5. Step 5: Solve for x
    x = 99,283,513,536.52/447,513.79
  6. Step 6: Final answer
    x = 221,855.76

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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.