Home / 282,568.72-389,946-155,246.80

Finding the Fourth Proportional to 282,568.72, 389,946 and 155,246.80

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Solution

The fourth proportional to 282,568.72, 389,946 and 155,246.80 is: 214,241.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,568.72 : 389,946 = 155,246.80 : x
  2. Step 2: Convert to fraction form
    282,568.72/389,946 = 155,246.80/x
  3. Step 3: Cross multiply
    282,568.72x = 389,946 × 155,246.80
  4. Step 4: Simplify right side
    282,568.72x = 60,537,868,672.80
  5. Step 5: Solve for x
    x = 60,537,868,672.80/282,568.72
  6. Step 6: Final answer
    x = 214,241.22

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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.