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Finding the Fourth Proportional to 404,329.34, 558,153.79 and 261,159.21

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Solution

The fourth proportional to 404,329.34, 558,153.79 and 261,159.21 is: 360,515.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,329.34 : 558,153.79 = 261,159.21 : x
  2. Step 2: Convert to fraction form
    404,329.34/558,153.79 = 261,159.21/x
  3. Step 3: Cross multiply
    404,329.34x = 558,153.79 × 261,159.21
  4. Step 4: Simplify right side
    404,329.34x = 145,767,002,202.01
  5. Step 5: Solve for x
    x = 145,767,002,202.01/404,329.34
  6. Step 6: Final answer
    x = 360,515.52

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1.5x scale

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.