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Finding the Fourth Proportional to 404,318.84, 558,139.33 and 261,148.71

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Solution

The fourth proportional to 404,318.84, 558,139.33 and 261,148.71 is: 360,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,318.84 : 558,139.33 = 261,148.71 : x
  2. Step 2: Convert to fraction form
    404,318.84/558,139.33 = 261,148.71/x
  3. Step 3: Cross multiply
    404,318.84x = 558,139.33 × 261,148.71
  4. Step 4: Simplify right side
    404,318.84x = 145,757,366,044.17
  5. Step 5: Solve for x
    x = 145,757,366,044.17/404,318.84
  6. Step 6: Final answer
    x = 360,501.05

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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.