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Finding the Fourth Proportional to 282,341.88, 389,638.08 and 155,017.98

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Solution

The fourth proportional to 282,341.88, 389,638.08 and 155,017.98 is: 213,928.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,341.88 : 389,638.08 = 155,017.98 : x
  2. Step 2: Convert to fraction form
    282,341.88/389,638.08 = 155,017.98/x
  3. Step 3: Cross multiply
    282,341.88x = 389,638.08 × 155,017.98
  4. Step 4: Simplify right side
    282,341.88x = 60,400,908,092.68
  5. Step 5: Solve for x
    x = 60,400,908,092.68/282,341.88
  6. Step 6: Final answer
    x = 213,928.26

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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.