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Finding the Fourth Proportional to 404,693.49, 558,700.70 and 243,588

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Solution

The fourth proportional to 404,693.49, 558,700.70 and 243,588 is: 336,286.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,693.49 : 558,700.70 = 243,588 : x
  2. Step 2: Convert to fraction form
    404,693.49/558,700.70 = 243,588/x
  3. Step 3: Cross multiply
    404,693.49x = 558,700.70 × 243,588
  4. Step 4: Simplify right side
    404,693.49x = 136,092,784,893.66
  5. Step 5: Solve for x
    x = 136,092,784,893.66/404,693.49
  6. Step 6: Final answer
    x = 336,286.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.