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Finding the Fourth Proportional to 282,322.59, 389,605.84 and 155,006.39

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Solution

The fourth proportional to 282,322.59, 389,605.84 and 155,006.39 is: 213,909.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,322.59 : 389,605.84 = 155,006.39 : x
  2. Step 2: Convert to fraction form
    282,322.59/389,605.84 = 155,006.39/x
  3. Step 3: Cross multiply
    282,322.59x = 389,605.84 × 155,006.39
  4. Step 4: Simplify right side
    282,322.59x = 60,391,394,781.32
  5. Step 5: Solve for x
    x = 60,391,394,781.32/282,322.59
  6. Step 6: Final answer
    x = 213,909.18

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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.