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Finding the Fourth Proportional to 282,372.56, 389,674.56 and 155,056.32

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Solution

The fourth proportional to 282,372.56, 389,674.56 and 155,056.32 is: 213,977.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,372.56 : 389,674.56 = 155,056.32 : x
  2. Step 2: Convert to fraction form
    282,372.56/389,674.56 = 155,056.32/x
  3. Step 3: Cross multiply
    282,372.56x = 389,674.56 × 155,056.32
  4. Step 4: Simplify right side
    282,372.56x = 60,421,503,271.22
  5. Step 5: Solve for x
    x = 60,421,503,271.22/282,372.56
  6. Step 6: Final answer
    x = 213,977.96

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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.