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Finding the Fourth Proportional to 282,357.69, 389,659.19 and 155,032.17

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Solution

The fourth proportional to 282,357.69, 389,659.19 and 155,032.17 is: 213,947.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,357.69 : 389,659.19 = 155,032.17 : x
  2. Step 2: Convert to fraction form
    282,357.69/389,659.19 = 155,032.17/x
  3. Step 3: Cross multiply
    282,357.69x = 389,659.19 × 155,032.17
  4. Step 4: Simplify right side
    282,357.69x = 60,409,709,010.98
  5. Step 5: Solve for x
    x = 60,409,709,010.98/282,357.69
  6. Step 6: Final answer
    x = 213,947.45

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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.