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Finding the Fourth Proportional to 399,017.88, 550,569.24 and 237,887.82

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Solution

The fourth proportional to 399,017.88, 550,569.24 and 237,887.82 is: 328,240.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,017.88 : 550,569.24 = 237,887.82 : x
  2. Step 2: Convert to fraction form
    399,017.88/550,569.24 = 237,887.82/x
  3. Step 3: Cross multiply
    399,017.88x = 550,569.24 × 237,887.82
  4. Step 4: Simplify right side
    399,017.88x = 130,973,716,262.66
  5. Step 5: Solve for x
    x = 130,973,716,262.66/399,017.88
  6. Step 6: Final answer
    x = 328,240.22

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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.