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Finding the Fourth Proportional to 282,337.17, 389,625.93 and 155,020.95

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Solution

The fourth proportional to 282,337.17, 389,625.93 and 155,020.95 is: 213,929.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,337.17 : 389,625.93 = 155,020.95 : x
  2. Step 2: Convert to fraction form
    282,337.17/389,625.93 = 155,020.95/x
  3. Step 3: Cross multiply
    282,337.17x = 389,625.93 × 155,020.95
  4. Step 4: Simplify right side
    282,337.17x = 60,400,181,813.23
  5. Step 5: Solve for x
    x = 60,400,181,813.23/282,337.17
  6. Step 6: Final answer
    x = 213,929.26

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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.