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Finding the Fourth Proportional to 282,608.70, 389,999.88 and 155,292.49

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Solution

The fourth proportional to 282,608.70, 389,999.88 and 155,292.49 is: 214,303.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,608.70 : 389,999.88 = 155,292.49 : x
  2. Step 2: Convert to fraction form
    282,608.70/389,999.88 = 155,292.49/x
  3. Step 3: Cross multiply
    282,608.70x = 389,999.88 × 155,292.49
  4. Step 4: Simplify right side
    282,608.70x = 60,564,052,952.40
  5. Step 5: Solve for x
    x = 60,564,052,952.40/282,608.70
  6. Step 6: Final answer
    x = 214,303.57

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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.