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Finding the Fourth Proportional to 627,201.35, 865,510.14 and 355,263.79

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Solution

The fourth proportional to 627,201.35, 865,510.14 and 355,263.79 is: 490,248.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,201.35 : 865,510.14 = 355,263.79 : x
  2. Step 2: Convert to fraction form
    627,201.35/865,510.14 = 355,263.79/x
  3. Step 3: Cross multiply
    627,201.35x = 865,510.14 × 355,263.79
  4. Step 4: Simplify right side
    627,201.35x = 307,484,412,619.83
  5. Step 5: Solve for x
    x = 307,484,412,619.83/627,201.35
  6. Step 6: Final answer
    x = 490,248.33

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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.