Home / 282,621.72-390,019.26-155,299.80

Finding the Fourth Proportional to 282,621.72, 390,019.26 and 155,299.80

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Solution

The fourth proportional to 282,621.72, 390,019.26 and 155,299.80 is: 214,314.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,621.72 : 390,019.26 = 155,299.80 : x
  2. Step 2: Convert to fraction form
    282,621.72/390,019.26 = 155,299.80/x
  3. Step 3: Cross multiply
    282,621.72x = 390,019.26 × 155,299.80
  4. Step 4: Simplify right side
    282,621.72x = 60,569,913,074.15
  5. Step 5: Solve for x
    x = 60,569,913,074.15/282,621.72
  6. Step 6: Final answer
    x = 214,314.43

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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.